Sort by
Relevancy

Free Stories

50%
Latex succubus
The lights of the city obscured the supposedly brilliant starlight in the night sky, leaving only dim and scattered scattered stars adorning the gloomy night sky half-covered by dark clouds, and the crescent-like crescent moon guarding it in the distance makes the night seem less empty Lonely. Mayb... Read full Story
Alicexiao 2023-01-06 4,973 Crossdresser Cumshot Creampie Fetish domination Guy Fucks Shemale high heel boots
100%
2nd date with Latina Sissy Destiny
So this was my second time with Destiny, a really cool Latina CD/Sissy who had just turned 22. You might want to read my first goaround with her title, “Deflowering Latina Sissy Destiny” as it will give background and context here. After our first encounter, she signaled that she was definitely... Read full Story
AllenB 2022-04-05 4,557 Crossdresser Cumshot Latina Creampie Shemale Fucks Guy Blowjob Interracial cd Homemade sissy cum in mouth cum swallow amatuer cd
100%
Lucia_001
Cuando descubrí que me encantaba vestirme de mujer, la verdad no supe que hacer, no solo era una fantasía, era lo que quería desde muy dentro de mí, fue un shock muy grande, del porque siendo hombre me encantaba vestirme de mujer..comprendí que no era normal al promedio de los hombres, porque siendo... Read full Story
Lucía Vanesa 2023-10-27 2,061 Small Tits Amateur Latina small cock sissy travesti crossdresser lucía vanesa Lucia Vanesa Lucy Travesti
71%
Mi Primera Vez
Como les había contado en mis post anteriores, desde joven este instinto femenino me consume cada día mas, esta sensación de ser chico con una hembra por dentro es una de las mejores sensaciones del mundo. Usar ropa femenina es el éxtasis al universo, como les dije soy travestí de closet al 1000... Read full Story
Carla Travesti 2019-02-11 4,252 Small Tits solo Amateur Cumshot Latina Masturbation Big Cock Lingerie travesti morena guevo
100%
Fun With Friends Chapter 4
As I stepped into the shower the warm water hit my body and felt great. I relaxed my ass and let Greg's cum stream down my leg. I could not believe that in the last couple of hours I had been shown to one of my best friends as a cross-dressing slut and had now taken his cum in both my ass and mo... Read full Story
shemale lover 2012-12-12 3,855 anal Creampie Latex
100%
Claudia Coming out adventure part 1
*Author's Note: This story starts off being told in First person and after awhile the story shifts to third person* Hello everyone, my name is Claudia I am a Cross dresser who one day hopes to be transgendered, although I do not want the surgery, I am looking to eventually live my life full... Read full Story
MissClaudia 2015-01-04 6,350 tranny Stockings suck Creampie ass fucking doggy style Latex
100%
sex-agenarian's onanic lust
An onanic lust of a sex-agenarian that I am; I'M IN BIG HEAT; it's the season of bodily reunions in nature... I'm like an elephant(e) waiting to be satisfied. My cloaca is starting to titillate at the mere sight (look hah!) of a guy's swollen crotch on the street... I activated all my sensors to sa... Read full Story
hippocampus_171 2024-03-09 4,885 anal solo Amateur Masturbation Creampie Sex Toys Mature small cock
92%
MY TS FOXXY & VENUS LUX FANTASY
Alyssa Gomez and Venus Lux were visiting Newark, NJ and decided to have lunch in the restaurant that I work in. It was a rainy day. The seductive pair were returning back to their suite in the Courtyard Marriott, but not before grabbing a bite to eat. Alyssa and Venus sat the bar and ordered a coupl... Read full Story
I_GO_3WAYZ 2021-03-02 11,860 Latina Creampie Shemale Fucks Guy threesome Blowjob Ass to Mouth cum in mouth double anal
50%
Giorgia e Helena esibite alla cena in villa
(storia di fantasia) Io e la mia amica Giorgia siamo due traveste molto effemminate, curiamo molto i nostri corpi e appariamo come femminucce sotto ogni aspetto ad eccezione delle nostre cazzette che sono praticamente sempre passive. Siamo ninfomani e completamente arse dal desiderio del sesso. Ci ... Read full Story
helentrav 2023-10-03 1,219 Crossdresser Cumshot Creampie Shemale and Girl domination small cock sissy cum in mouth
50%
Luxure onanique
Luxure onanique du sex-agénaire que je suis... JE SUIS EN GRANDES CHALEURS; c'est la saison des retrouvailles corporelles dans la nature... je suis comme une éléphante qui attend d'être satisfaite. Mon cloaque commence à titiller rien qu'à voir (regarder hah!) l'entrejambe gonflé d'un mec dans l... Read full Story
hippocampus_171 2024-03-09 808 anal solo Amateur Masturbation Creampie Sex Toys Mature small cock
100%
First Time I Experienced Eating a Tgirl Out
So this is likely going to seem tabboo for some and if this is not your thing, I respect that but everyone is different. Eating pussy came natural to me like it does for most guys once they start having sex with girls. Other than one time 69ing with a female and having what I would call "incidental ... Read full Story
AllenB 2022-10-21 5,665 Amateur Big Tits Cumshot Latina Creampie Fetish Blowjob rimming Homemade cum in mouth latina ts
100%
delicious virile male flesh
Tasted delicious virile male flesh… The breeze caressed my swollen nipples giving me pleasant shivers. The two glasses of Riesling had also contributed to my excitement. My crotch was burning as if the disappearing sun had blown all its thermal energy into me. Under my fine lace panties, purple o... Read full Story
hippocampus_171 2023-04-23 5,510 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminisation cum in mouth gaycd virile
50%
La bonne chair masculine…
La bonne chair masculine… La brise caressait mes mamelons gonflés me donnant des frissons agréables. Les deux verres de Riesling avaient également contribué à mon excitation. Mon entre-jambe brûlait comme si le soleil qui disparaissait avait soufflé toute son énergie thermique dans mon intérieur... Read full Story
hippocampus_171 2023-04-23 1,407 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminization cum in mouth gaycd virile
100%
the orgiastic fever of a trans-milf
Simulating a woman, or the orgiastic fever of a trans-milf It's been two months since I moved to the megapolis, where I've discovered several places where the third gender goes. One of my first explorations was a huge lingerie shop in a MALL; I wanted to buy some sexy stuff without being noticed ... Read full Story
hippocampus_171 2024-09-04 2,826 anal Amateur Cumshot Creampie Shemale Fucks Guy Latex Sex Toys Mature small cock
100%
Devastating and dominating
Tracy drove the black SUV with her friend Miss K in the passenger side, both of them struggling not to be bored to sleep with the monotonous countryside I-64, the scenery broken up only by the occasional road sign or truck stop. The Madonna CD thumping in the stereo helped matters though, the t... Read full Story
shemale lover 2012-01-29 5,556 Masturbation sucking Creampie Latex fucking
50%
Being Shemale
Every night I wear make up and dress up in a sexy lingerie. I stand in my balcony late night trying to lure men and women driving on the road. Last night a truck driver stopped near my house to inspect his vehicle. During his inspection he suddenly saw a long legged booty women in the balcony inf... Read full Story
babydriver 2024-06-04 4,270 Stockings Crossdresser solo Outdoor Ebony Asian Ladyboy Lingerie big ass sissy femboy
100%
Camming down the rabbit hole Ch5
I was jolted out of my sleep by the phone on my bedside table vibrating, bleary eyed I picked it up and saw a message from the couriers that a package would be delivered today around 4pm. The realisation that this was the package I had been waiting for and I could finally wear something else in my s... Read full Story
Dani_does_Dallas 2021-09-29 5,527 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade cum in mouth webcams
100%
Sexual fantasies on tiptoes
Sexual Fantasy on tiptoes when I was a teenager, I began to like live female gymnastics and ballet, and I had a good feeling about the posture of women straightening their toes and leaning their heads back, my intuition tells me that this is what happens when a woman has an orgasm, and as an adult I... Read full Story
Oldslut Sissy 2024-04-03 5,704 Crossdresser solo Amateur Masturbation Asian small cock sissy self sucking
100%
Diary of a transsexual escort
Monday: I got up late today, close to lunch, but after last night’s exertions I badly needed my beauty sleep, a look in the mirror confirms that more sleep was needed, anyway I’ve got a day with the girls getting pampered and I cannot wait. I put on my sexy black stockings and susp... Read full Story
shemale lover 2012-04-03 3,199 Stockings anal sex Creampie oral sex
85%
Crossdresser At XXX Movie
It was hot and the sun felt like it was going to melt me. I was walking home from work. I never drive that much and I just got off the bus for a fast beer. I walked past this XXX Movie house and thought what the fuck, it has air and it is so hot. So in I go. I should say that I'm somewhat Bi. Tha... Read full Story
shemale lover 2012-03-30 4,353 anal sex Creampie handjob rimjob
100%
Fender Bender Chapter 7
The main Characters are as followed: My name is Robert, but when I am dressed I call myself Vicki. I am 5'9" 160 pounds, blonde hair and blue eyes. I turned 18 a few months ago. Gary is almost 6', 185 pounds. He has short blonde hair and dark blue eyes. He has a nice tasty 7 1/2 inch cock... Read full Story
shemale lover 2012-07-27 3,512 Creampie ass fucking domination oral sex sissy
100%
Shawshank affair
Courtrooms can be a scary place. They smell like older leather, the wood paneling has been polished with oil and each sound penetrates your body like a loud smack from a cap pistol, which echoes in the forest, especially the gavel smacking on a block from the Judge. I felt strongly that I would be f... Read full Story
Jon Paul 2018-08-20 7,060 Stockings Crossdresser Cumshot Bareback Creampie Shemale Fucks Guy Blowjob Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth
100%
Beefy Buns
It's hard to get good help. Probably, that's true in any business, but it's especially difficult to find decent employees in the fast food racket. Believe me; I've tried. I manage the local Beefy Buns franchise--burgers, fries, and shakes is our mainstay, but the menu also features fish and chick... Read full Story
shemale lover 2012-04-22 6,591 anal sex Creampie blonde shemale
50%
REGARDE-MOI MAINTENANT ⚧️ ⚧️
Il y a quelques années, à mi-parcours du premier mandat du président Pelosi, j'ai surmonté mon inclination habituelle à éviter les risques et j'ai accepté une invitation à visiter l'appartement de deux femmes - de parfaites inconnues - qui venaient de découvrir que j'aime porter des culottes. Becky ... Read full Story
Femboy 2021 2023-03-30 1,461 Stockings bdsm Lingerie Sex Toys humiliation feminisation anal play poule mouillé cage de chateté femme lesbienne dominatrices esclavage
100%
La Mujer Trans más feliz del mundo.
- Porfavor, no pares Gaby! - Le gritaba yo, completamente llena de placer, mientras a 4 patas aguantaba sus grandes embestidas, a la par que mis grandes tetas chocaban entre sí. - Ya casi me voy a venir Juanita! - Dijo ella, mientras trás de mi daba todo de si para hacerme sentir en el paraiso, s... Read full Story
DaphneYuki 2023-10-28 2,556 anal Amateur Big Tits Latina Bareback Creampie Blowjob Big Cock Interracial shemale fucks shemale doggystyle story line
100%
DÉBUTS INNOCENTS
"Avez-vous pris votre vitamine, ma chère ?" Ellen a appelé de la salle de bain. Je me frottai le sommeil des yeux et ramassai le flacon de pilule, roulant un gros comprimé dans ma paume. "Ma pilule de cheval ? Je le fais maintenant." "Avez-vous déjà remarqué une différence ?" "Non. Les vitamines ... Read full Story
Femboy 2021 2023-01-26 1,536 Stockings Teen (18+) Crossdresser Cumshot Fetish Blowjob Big Cock Lingerie Shemale and Girl domination Guy Fucks Shemale
85%
My Awkward Phase
My Awkward Phase ©Alexandra Rios 2019 The greatest lie is that what happens in high school doesn't matter, because life begins in college. I pretended to agree, although I never believed it, for I was the world's greatest liar. Wannabees I was hanging out with my friends Quinn, Barb and Anne ... Read full Story
the greatest liar 2019-06-14 12,517 Small Tits anal sex Latina Masturbation Bareback Creampie Blowjob Big Cock transformation gangbang Shemale and Girl Guy Fucks Shemale Sex Toys Ass to Mouth cosplay hormones high school real life situations
100%
La Entrevista (trabajo de mesera)
LA ENTREVISTA (Trabajo de Mesera) Esta historia es una gran fantasía que tuve por años, pero que ahora aunque a medias es una realidad. Krystal, una de las chicas que me ayuda con el maquillaje, varias veces me había hecho el comentario de que en el bar donde ella actuaba, necesitaban a una chi... Read full Story
Salma TV Pasiva 2023-01-19 1,866 Stockings Crossdresser Amateur Latina Blowjob Big Cock Lingerie Guy Fucks Shemale Interracial
85%
My day after forced feminization - fetish
My typical day starts with getting dressed in one of my favorite outfits. Short minidress, thigh highs, thongs, a corset and 6 inch Stilettos. I started wearing a corset to get my waist tighter and transition too the perfect hourglass figure. After Breakfast typically one of my wife's friends stop... Read full Story
TRTRAIN 2023-04-22 5,576 solo Amateur Masturbation Fetish Ladyboy Lingerie domination Sex Toys Homemade
100%
Nunca se Olvida
He tenido la oportunidad de tener sexo con varios hombres, algunos mayores que yo y otros muy chicos, no me fijo en estereotipos o personalidad, solo me gusta disfrutar del sexo..... Pero siempre hay uno que te deja enamorado, Daniel su nombre una persona que conocí por medio de un chat. No pas... Read full Story
Carla Travesti 2020-10-05 3,652 Small Tits Crossdresser Amateur Latina Bareback Fetish Ebony Lingerie Interracial
100%
First Time
I'm not really sure how I ended up where I am. However, the events below are true and only the names have been changed. It happed to me over 15 years ago and my life has never been the same. It was my freshman year of college, being 35 in the middle of a mean divorce I decided to sell my condo an... Read full Story
shemale lover 2012-09-28 4,642 anal Creampie oral sex crossdressing rimjob
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 6,622 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
69%
How i started feeling like a girl
It was early in my puberty, I was the youngest in my group of friends and many of my them were already dating and having sex with the neighborhood girls. By this time I was beginning to learn more about my body and I noticed more about girls, especially my neighbor's girlfriend, I'll call her Camila... Read full Story
Leah Peaches 2020-01-06 8,022 Teen (18+) Crossdresser solo Amateur Latina
100%
Destreza oculta
Pocas cosas me enloquecen tanto de pasión como una buena verga, me gustan de todas las formas, colores y tamaños, desde esas vergas gorditas y cortitas, hasta aquellas vergas enormes curvas y venosas, me encanta tocarlas y hacer que poco a poco se pongan duras, me gusta comenzar por acariciar y masa... Read full Story
babydolltv 2021-01-04 2,618 Small Tits Crossdresser Amateur Latina Blowjob Big Cock Mature Homemade mexican Babydolltv
50%
La pistola NEGRA del Tío, entre Las Bragas de Mi Tía LA PUTONA
Aaayyy.. Yo sabía que la Tía había sido Flor de PUTONA.. pero, jamás me imaginé que me iba a tocar a mí 'hacerme cargo de sus cosas'.. su 'herencia'.. la casa ya vieja, por reordenar destinar y.. LAS COSAS que una descubre ya con los años! Todo estaba igual, pero HORRIBLEMENTE ARRUINADO.. más, e... Read full Story
Ari Riè 2021-06-03 2,517 Teen (18+) Small Tits Crossdresser Latina Bareback Shemale Fucks Guy Fetish blonde Big Cock Uniform Lingerie domination Premium HD
89%
Fem Firm 2 -The Weathergirl
PART 1: A COURTESY CLIENT BLOWJOB Three weeks into my gig at Coxon & Dicster had been a blast. At first, a few of the girls had some reservations about me working there because I wasn't transgendered myself but I guess I won them over with my naturally cheerful personality. At least,... Read full Story
bennyx709 2016-11-14 18,543 big dick anal sex suck Blowjob cock sucking workplace
50%
DATES NUITS
My wife, Denise, and I have been happily married for over 10 years. Over the years, we have enjoyed a vibrant and adventurous sex life. As we've grown in our marriage, we have become very open and honest about our sexual fantasies and desires. Through the years, we have come to realize that my w... Read full Story
Femboy 2021 2023-02-07 1,839 Stockings Lingerie Shemale and Girl Guy Fucks Shemale Interracial Sex Toys cum in mouth
86%
La primera vez que me hicieron mujer
Desde mis mas lejanos recuerdos, siempre sentí la necesidad de lucir femenina...recuerdo que de niña me encerraba en el cuarto de mi mama y me probaba las medias panty y los tacones, sobre todo unas sandalias doradas que me encantaban...podía pasar horas en esa habitación imaginándome siendo toda un... Read full Story
maritza_tv 2023-04-28 11,263 anal Small Tits Crossdresser Amateur Bareback Creampie Big Cock Guy Fucks Shemale Interracial Mature cd sissy femboy
100%
My 1st Time was Not the Only Time.
One late night after hitting the slopes and partying I left my friends birthday party feeling extra horny. It was about 6 or 7 in the morning now and after having no luck finding an escort I responded to an ad on craigslist posted by a trans woman. I figured two things, this dick isn't going to suck... Read full Story
LesFuax 2019-02-16 9,649 first time Small Tits Amateur Latina Bareback Creampie threesome Blowjob Big Cock ass fucking barebacking barebackedshemales first time with a tranny raw anal raw dick raw fucking firsttime
80%
TG Girlfriend moves in (part 2)
My wife Lydia and I have been married about 9 months, we have a very close TG friend, Joanne, that lives next door and every once in a while, we get together, and all go out and enjoy. We have had sex together, and when Lydia is away Joanne, and I are together at every opportunity. Joanne and I work... Read full Story
Jon Paul 2022-01-21 3,874 Big Tits Cumshot Bareback Creampie threesome Blowjob Shemale and Girl Guy Fucks Shemale
95%
My best friend turned trans.....so I fucked him - Part 1
Theres a bit of history to this one so strap in! I started hanging out with this group of kids in my area when I was 12 years old, we did all the typical stuff you can imagine young kids getting up to (played football, chased girls etc...) over the years I became really good friends with one of the ... Read full Story
iconicirish 2023-05-11 10,066 Stockings Amateur cock Masturbation sucking Blowjob Big Cock Lingerie Latex transgender sissy
71%
Filthy Little Beast
I had very few memories of my early childhood. The ones I did have were anything but pleasant. I did remember my mother and her blind hatred of my father and myself. She was very tall blonde woman with cold blue eyes named Monica. My mother always dressed in the most expensive leathers and satins in... Read full Story
shemale lover 2011-12-02 12,989 taboo Fetish crossdressing erotic encounters
60%
Aunt Cindy's Bizarre World
My name was Jim Rogers Jr. at one time. I was born and raised in a small town in a rural county in Oklahoma. My father James had been the pastor of the local Pentecostal Assembly of Jesus. Dad was what was known an ultra conservative hell fire and brimstone preacher. My mother's name was Allison. Sh... Read full Story
shemale lover 2011-12-02 10,612 taboo Fetish crossdressing sentimental erotic
0%
P.A. for a Day
The gates swung closed behind Charles as he slowly drove his car up the sweeping driveway. Even though he was looking forward to the erotic delights which were in store for him that day, the cares of the world seemed to weigh heavily on his shoulders. As he drove up to the garage he mused about t... Read full Story
shemale lover 2012-09-05 6,378 Crossdresser Masturbation Latex Sex Toys heels
66%
My girlish desires
My girlish desires, I am happy to spend my weekend at home to live my life as a woman. I apply a depilatory cream to my body, which I leave to act for a few minutes before going in the shower. I take this opportunity to do an enema to avoid unpleasant surprises during my girl games. Then, using ... Read full Story
sandratvtg 2023-01-19 4,473 Stockings solo Cumshot Creampie Fetish Big Cock Lingerie Sex Toys
100%
Exposure, Disclosure
The Greatest Liar, Exposure, Disclosure © Alexandra Rios 2019 Author’s Note: This is a continuation of the narrative which commenced with “My Awkward Phase”, which I posted here previously. Readers may wish to read that before continuing, although I have written them to stand alone. Natives s... Read full Story
the greatest liar 2019-06-18 8,272 Teen (18+) Small Tits Amateur Group Sex Latina Blowjob gangbang Guy Fucks Shemale cum in mouth
100%
Lola Chapter 5
Lola chapter 5 Summer vacation was coming to an end. Most of the time we had been to ourselves, mostly at home but also a couple of shorter trips. Beer tasting in Stockholm's archipelago, a trip to the west coast, overnight stays in hotels, everywhere we were received like any other couple. A fam... Read full Story
BellaBeau 2023-10-30 6,375 anal Cumshot Latina Bareback Creampie threesome Shemale and Girl Lola
100%
Hooked On Shemale Cock
Nitromethane Well, that did it, I finally swallowed my first load of shemale cum, and I haven't been able to get it out of my mind since. It was three years or so that I'd been wanting to have a shemale cum in my mouth, and it was everything I'd dreamed and more, but now what? I'm at work think... Read full Story
Gwapo67 2022-02-01 3,758 cum in mouth
71%
The Training of Maria Louise
Chapter 1 I’ve decided, since you’ve told me you want to be a little dirty tart, that I should punish you by being a cuckold, someone who’s wife is unfaithful. We will begin by transforming you into Maria, we will apply your make up and dress you in white silk underwear, a nice ... Read full Story
shemale lover 2016-03-20 8,328 shemale Latex
50%
Hotel Humiliation
My world begins to fade back to from blackness. I'm very groggy and my vision is returning. I'm in a hotel room and my Mistress is standing in front of me. My head is still spinning as I try to understand my surroundings. I would say we have a lesbian relationship, except Mistress is a shemale, with... Read full Story
shemale lover 2011-09-18 5,371 licking pussy dildo
33%
Being Barbi's Bitch
After ten wasted years of foolishly trusting in love to 'cure' me of my femininity, I had only just begun to re-embrace the sissy inside me when something made me reach out to an old friend. What made me do it, I really don't know. Although I was once again revelling in even the smallest aspects of ... Read full Story
shemale lover 2011-10-01 9,431 Stockings sucking domination
100%
Changling
‘My goodness!’ she exclaimed, ‘It appears that you've had an accident, youngster. You'd better come home with me so that we can make you presentable. It's quite safe, 'cos I live in the big house in the woods on the other side of the hill behind the toilets. Come along, now,’... Read full Story
shemale lover 2012-02-02 9,138 shemales Masturbation Big Cock
100%
Darling Nikki
Chapter 1 - The Setup "I'm going to catch him!" Samantha thought to herself as she looked at her disheveled panty drawer. She now had proof that her roommate, Nick, had been wearing her clothes, but had to catch him in the act. She did a search online for ideas on how to catch him. She ... Read full Story
shemale lover 2012-07-15 7,900 Cumshot oral sex Latex sissy
100%
Afternoon Delight Chapter 2
The week was very busy getting ready for the party. All of Auntie's staff was invited, plus several students and professors that I didn't know. Well, this presented me with a small problem: Not all of them knew I was transsexual. I asked Auntie if I could wear a wrap skirt in order not to freak anyb... Read full Story
shemale lover 2012-08-26 2,989 Creampie Blowjob kissing cum swapping
100%
A Flash of Lace
The insistent ringing of the phone broke my concentration and with great annoyance, I climbed off the bed and picked up the receiver. "Hey little brother!" My sister's sparkling voice filled my ear. "Di, Is that you?" I exclaimed happily "Got any more sisters I don'... Read full Story
shemale lover 2012-03-03 6,589 Stockings Fetish dressing
71%
Francis to Frances
It was never my intention to go to live with Aunt Matilda and Aunt May, in New York state five hundred miles east of Arlsberg but when I was offered a place at Uni a short bus ride from their place that Dad suggested I should see if I could stay with them. Dad always referred to them as Aunt Mati... Read full Story
shemale lover 2012-11-21 5,124 Creampie Fetish transformation