Kylie Jenner is saying goodbye to summer 2017 with her bestie.
The 20-year-old Life of Kylie star and co-star Jordyn Woods posted on Friday on Instagram photos of them posing in colorful swimsuits. Kylie is sporting a red and yellow cutout two-piece, while Jordyn is wearing a red and green one-piece in a similar style.
"Summers almost over party," Kylie wrote.
"Oops we didn't see you there," Jordyn said.
Kylie is known for her sexy Instagrams. See more from years past.
Before enjoying a sister dinner at Giordo Baldi, the Keeping Up With the Kardashians star shows off her Norma Kamali dress from What Goes Around Comes Around.
Ahead of her 21st birthday, Kylie shared this sultry bathroom shot on Instagram.
The mother of one flaunted her fit mom body in this snap with daughter Stormi Webster.
Kylie simply glowed in this bikini pic alongside her young daughter Stormi Webster.
The makeup mogul showed off her curves in this form fitting dress.
Kris Jenner's youngest stunned with this blue 'do.
Move over, Kim Kardashian! Kylie's rump is the scene-stealer now.
Per Kylie, she and her bestie are just "girls next door."
The 20-year-old Life of Kylie star and friend and co-star Jordyn Woods celebrate their own "Summer's almost over party."
Kylie wrote" day at Mommy's" while tanning at mama Kris' place.
Kylie posted this sexy cleavage pic with a simple yellow heart emoji.
Kylie flaunts her tiny waist and enviable figure in teeny underwear.
Kylie nearly flashes her chest in this super sexy snapshot with a puppy Snapchat filter.
Kylie rocks some white briefs and a matching tube top.
Wowzers! Kylie flashes the underside of her breasts in a barely-there top.
Kylie nearly busts out of her top during a night on the town.
"adventures," she captioned this wild snapshot.
"Hola," Kylie captioned this sizzling sunset pic.
The reality star showcased her bikini body in late February during a particularly hot L.A. "winter."
The reality star posted a bikini selfie in February 2016, promoting her new Lip Kit.
Kylie is exquisite in a Balmain mini dress for her family's annual Christmas Eve party.
The reality star flaunts her booty and a new tattoo.
How does Kylie start her morning? With a fresh-faced selfie, of course!
The brunette beauty heats up Miami by matching outfits with her best friend.
The reality star strikes a seriously sexy pose.
King Kylie keeps it casual with a pastel dress and messy hair.
Kylie wears a latex bodysuit and hangs out with a pal during her sexy cover shoot for Interview magazine.
The brunette beauty shows of her summer bod in a skimpy bikini.
Kylie chills by the pool and flaunts her booty in a thong swimsuit.
Kylie is in for some interesting tan lines...
Of course, the official last day of summer in the Northern Hemisphere is Sept. 22, and Southern California's summers sometimes to run well into October, a "summer's almost over" party may be premature...but heck, a party's a party!
Watch a brand new episode of Life of Kylie Sunday at 9 p.m., only on E!