Extreme Crop Top Underboob Trend on Bella Hadid, Emily Ratajkowski

Celebrities are busting out this summer—and you can, too.

Emily Ratajkowski puts on a leggy display as she steps out with her son Sylvester, two, in NYC

Emily Ratajkowski flashes underboob as she dances braless in a tiny crop top

Is Underboob the New Cleavage? Introducing the Extreme Crop Top

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Bella Hadid's Impromptu Photoshoot With Emily Ratajkowski Included Itty Bitty Bras and the Lowest Rise Skirts

Emily Ratajkowski flashes a glimpse of her gym-honed abs

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Emily Ratajkowski Wore A Bra As A Shirt & Served Major Underboob

Extreme Crop Top Underboob Trend on Bella Hadid, Emily Ratajkowski, and Kendall Jenner