Justin Bieber and Kendall Jenner Have a Sexy Pool Day in Vogue

The April issue of Vogue is packed with pictures of today's hottest stars, including Justin Bieber, Kendall Jenner, Ansel Elgort, and Gigi Hadid. Of all the duos featured, perhaps Justin and Kendall had the sexiest snaps. In one memorable moment, Justin revealed his abs and Kendall showed off her bikini body as they lounged near a pool. Kendall also posed with handsome Ansel and her BFF Gigi. As if that's not hot enough, the magazine features racy pictures of Justin, Ansel, and Gigi and her boyfriend, Cody Simpson, in Mario's popular "Towel Series." Read on to see some of the sexiest photos and interesting quotes.

Mario Testino/Vogue

Despite being clear competitors in the fashion industry, Gigi and Kendall are good pals. "Gigi and I? We first met at Nobu Malibu," Kendall told Vogue. "I knew her younger sister better back then, but — flash-forward a while — Gigi and I both ended up modeling in New York a lot, so we started to get together, and, of course clicked right away." Nowadays, you can catch the buds getting cute on social media, including Gigi's fabulous Instagram.

Mario Testino/Vogue

The sunny shoot follows a tough chapter for Justin. He is attempting to turn the page with his upcoming roast on Comedy Central, which Kendall attended. In the meantime, Justin has been busy recording new music. "I've been kind of on the low, just working on the new album," he told Vogue. "Maybe I've had too much time on my hands. . . . Now I'm ready to get back on the grind."

Annie Leibovitz/Vogue

Serena Williams graces the cover of Vogue's April issue, which hits newsstands on Wednesday, March 25.