Kendall, 20, rocked a white suit, looking particularly tan while sitting in front of a picturesque backdrop, while her younger sister sported a bright yellow bikini with a black trip that read "Kendall + Kylie."
Kylie, 18, posted her own sexy selfie from the photo shoot in April, flaunting plenty of cleavage.
The ladies' momager, Kris Jenner, posted photos from the shoot, writing, "Kendall and Kylie's new swimwear collection @KendallandKylie @Topshop coming June 9! #proudmama #kendallandkylie."
The ladies are no strangers to showing off their bikini bods. The sisters spent Memorial Day Weekend frolicking in racy suits with pals. They documented their antics on Snapchat as they rolled around in inflatable balls on the lawn.
Kylie also shared an Instagram of her very sexy cut-out bikini, though she hid her face from the camera with a green cup and sunglasses.
The Kylie Lip Kit creator recently hung out with her rumored boyfriend, PartyNextDoor, even though she got upset that he was "deleting" her from social media. Find out more in the video below.