Kendall and Kylie Jenner's New Bikini Snaps Will Make You Do a Double Take

Looks like Kendall and Kylie Jenner spent their Sunday at the pool! Within the same hour, both ladies posted seriously racy bikini pictures on Instagram. Kylie dropped hers first, showing ample cleavage in a one-piece with several slits. Then came Kendall's picture. Wearing a tangerine two-piece, the supermodel put her abs and waistline in perfect focus. All things considered, it's clear the sisters have paid close attention to Kim Kardashian's formula for swimsuit pictures.

The pool is just the latest backdrop of Kendall and Kylie's enviable Summer. On Wednesday, the duo brought their sisterly love to the red carpet at the ESPY Awards, where they supported Caitlyn Jenner as she took the spotlight to accept the Arthur Ashe courage award. Keep reading to see their bikini snaps, then get the details on the Kardashian-Jenner family's unofficial Instagram competition with Justin Bieber.