10 Times the Underboob Ruled Instagram

This might be the breast trend ever.
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With the welcome resurgence of the crop top, a sexy spillover effect has taken hold of Instagram: the underboob.

Instagram vixens like Bella Hadid and Kim Kardashian have been letting it all hang out on the 'gram as of late, dealing a death blow to the sexy boob trend of yesterday, the sideboob.

Below, relive ten times the glorious underside of breasts have ruled Instagram by way of these ten supremely sexy snaps.

Turns out it's the underboob's world—we're just living in it. 

h/t Cosmopolitan

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