The 16-year-old Keeping Up With the Kardashians star showcased her derrière in thin white pants, looking on as her "best friend and bodyguard" Scott Cunha snapped a mirror pic.
Kylie, along with sisters Kim, Kourtney and Khloé Kardashian, had a grand ol' time down in Florida. The girls stayed at the famed Versace Mansion, and Kylie even Instagrammed a mini-photo shoot of herself modeling a tiny black bikini throughout the house.
But Kylie didn't hang on to that swimsuit for long! Kim, 33, "stole Kylie's bikini" and Instagrammed some sexy snaps of herself wearing it, writing jokingly, "she's not getting it back..."
Oh, she'll get it back—sisters share everything! But this probably won't be the last time Kim looks to Kylie for style inspiration. During an episode of Keeping Up With the Kardashians, Khloé called out Kanye West's love, saying, "She literally Tumblr-stalks Kylie!"
Kylie wasn't overly impressed, though. "Kim acts like my Tumblr is Vogue Magazine," she said. "I'm over it."