Rocking a long strawberry blonde wig (Jenner's hair is naturally short and jet-black), the Kylie Lip Kit entrepreneur rocks an off-white one-piece with an extremely plunging neckline and cutouts on either side of her abdomen.
"Almost summer," she captioned the picture. "Trying on swimsuits and I fell in love with this @portobrazil one."
The picture came just 24 hours after it was announced that Jenner's older brother, Rob Kardashian, had impregnated his fiancee, Blac Chyna.
See more pictures of celebrities' spring break beach bods:
Spring Break 2016 - Stars in Bikinis
Kylie Jenner sizzles in one-piece white swimsuit with plunging neckline
My number one ho
Happy Saturday. 😎🌴🙏🏻 #familytime 💜@davidbeckham @brooklynbeckham X VB
Adios Mexico 💚⚪️❤️
Not in Greece but...
J U N E 1 ✨
Love this @gmilanesi airstream she did for @casamigos in honor of the bohemian artist Amos Ferguson #tacoheaven
Traveling the world is one of the most beautiful things in life. Thank you Brazil for having me and my family, and big thanks to @Airbnb for putting us up😘😘😘🇧🇷
"In the summertime when the weather was hot🌞 You can stretch right up and touch the sky🏝 When the weathers fine...." #summer #ready4myvacation
Watching over the bay at the fairmont beach in Barbados
See the light in others and treat them as if that is all you see. -Wayne Dyer
They turning up! 👀👀👀✊🏿😭
Long Weekend ahead got me like... @constancejablonski 😎 Fin de Semana Largo me tiene...
Camouflaging 🌿🍃 worked?
we love our little Gus Gus & we love our @kortnijeane high waisted bottoms 😻☀️ 5.26.16
Mixing and matching my favorite pieces from the 5x5 Swim Project with @lspaceswim 💙
Shop this and more on @REVOLVE (available now) #REVOLVE5x5 #REVOLVEaroundtheworld Link in bio!
Happy sunny day!! Are you guys ready for
Bought three new swimsuits today 👙 This one is my favorite!
So #blessed to be on the #lake with my #family and to have a day off of work! #sisters #saltandpepper @scherzygirl
עכשיו בחנויות 👙☀️
קולקציית בגדי ים בעיצובי !
Last minute dip. No bottoms, no problem. #nothingisgonnaruinmyday 🇧🇸🙏🏽☀️🌴
Bae Watch ! #donthasslethehoff @micahmarcus
Cheers to the (almost) weekend 💃🏻✌🏽️ trying to figure out what to wear on Kelly & Michael and I'm thinking I'll just go with this look 😜☀️
In paradise 🌴☀️💋
He'll be a merman in no time thanks to @thewaterwhisperer #mumlife ✨
@bowie82 and I enjoying some time at the pool before celebrating @samanthapatridge 21st!!!!
Feeling motivated to eat my greens.. 😂🌴 #SundayFun #SportsIllustrated
Sundays are for hanging around 😎
Girls just wanna have sun 😜☀️🌴 #happysaturday 📷: @farrahaviva
Beachin' w the bday girl!
So much fun relaxing this weekend. Monday came right at me like...
With my #island baby🌺 @sophialabraham #hawaii #BestHawaiiTripEver @hotmiamistyles #beach #beachbody #summer #beachbunny 🌊🌺🎉✨🌴
❤️Paradise........ #Fuchsia #DayDreamin
Take me back to the Maldives (+alcohol!) 🐬🌴🐚🌪💦
Dinner with mah babe @cash_warren 🌺#adultspringbreak
My girl craved some vitamin D ☀️
Oh it's a rough day here in paradise it's cloudy oh well just have to make the best of it. 🌴 #poweofpositivethinking
The most beautiful day.. 🌺☀️
just like heaven ...
Look who I found?! 🌴
#Hawaii Time🌺🌊❤️🌴 @SophiaLAbraham #ALOHA 🐢
❤️It feels good to remember who you are before the world told you who you should be........ #Solitude #Authenticity #Clarity
Preeeeeety #vacay2016 #thisis41
My Mai Tai is as big as my head. This one is for my Grandmother Sugarplum who loved her "high tides" whenever she was in Hawaii. I think she would have loved this one.
Sisters in Paradise 🌊
This is 14. Omg. 🌴🌪👯 #spingbreaking with our friend @ellataitelman and our @mimsygray
Just chilling ☀️
Finally some relax time 😍😘 so happy I had this boy supporting me here :) now headed back to LA👙👑@greggsulkin #sxsw #iloveyou #happytuesday #traveltuesday #tan #tot #pool #boyfriend
We are NOT horsing around 😂😂 #MLS #sissysquad #plusmom #hydrate
Havin fun in the sun in my @alleaswim 😎 #nofilter #bikini #girls #bffs #happytimes #caligirl #springbreak
Hat game on point! @katherineh82 @marabethpoole #msl #hydrate #sissysquad #plusmom 😂
Missing that catamaran life! #noonecallsmecaptainhere 😞⚓️
Of Course I Couldn't Do It Without The Help Of My Partner In Crime.... #ProudMoment 🐟
She takes #BAYWATCH to another level.. World fell in love with @alexannadaddario in #SanAndreas and I was so impressed by her chops and presence every day, that I had to have her "rep the squad" in our film. Just wait til you see her - and all our girls - kick ass and protect the bay. #GameOver #BaywatchBabes #CoverYourEyesBoys #BAYWATCH SUMMER 2017.
That time I hung out with the @VictoriasSecret Angels… watch me & @ddlovato on #VSSwimSpecial, tonight 9/8c @cbstv
So many beautiful and authentic locations for the filming of The Return of Xander...
Left my phone behind to be present! I am so grateful for the people I've met this year but more importantly for the people who have been consistent and by my side through thick and thin. That'd be YOU. Thank you for another year! Love you guys!
Just another manic Monday 😏 @janellehansen
No shoes no shirt no problems 🐳🍍🌴
Happy Happy Birthday to my favorite twins and members of our girl group! 🎈🎈
43 is good... Very good #islandvibes
So long Curacao! Refreshed and ready to see what's next... 🍹🍍🌴🌞🌞🌞
Happy Friday! ☀️
My magic 👼🏼💕
#roomwithaview #napa #castlelife #familytime
99 problems but a beach ain't one. 😂🌴☀️ I am seriously in #paradise and can't get enough! #maui #badjoke #WestinKaanapali #SiegfriedGetaway #1year
Another view of lovely Savannah
Super casual spa-wear 🌳
Primera vez en una piscina! First time in a pool!
Beach Bum 🌴🌞🌴 #Bahamas 🇧🇸
Ride the black swan 🎂🎉🎉🎉 #bestfriends ever #electrablue
Getting the Tum in the the sun 🌞👙🌞👙
Beautiful Sunday 🌞
If this is wrong I Don't want to be Right.... ✌️ #turksandcaicos #vaca
🌺So much fun on my early bday celebration 🎂 feeling loved and blessed.
COA... Chilling with my baby boy 💦🌴☀️💕🐤#coachilling #foreveronvacation #week2 @coachella