Emily Ratajkowski Shakes Her Butt in Sexy, New Video — Plus More of Her Raciest Instagram Posts!

Emily Ratajkowski is once again turning heads!

The Sports Illustrated model — who's currently enjoying a birthday vacay in Turks and Caicos — had some fun frolicking in the islands' crystal clear waters, documenting the experience on Instagram.

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"Mood," the 25-year-old captioned a video of herself shaking her butt in a barely-there bikini.

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The brunette beauty also shared a clip of the moment she blew out her birthday candles, writing, "[Here's to] all my friends & family for celebrating my 25th birthday… couldn't have been better."

Scroll down to see more of Emily's most risqué Instagram posts to date!