When in Miami... Kim Kardashian channeled her inner beach babe by sharing a photo of herself wearing the same black cutout bikini that her younger sister Kylie Jenner modeled in a series of earlier Instagram selfies on Wednesday, March 12.

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"Quick swim before the Dash party," the 33-year-old reality star captioned one pic of herself showing off her ample cleavage and toned abs in front of a mirror. The photo was taken in what appears to be the bathroom of the Versace Mansion, which features gold faucets and marble countertops -- plus what looks like several chairs and a table.

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Alongside another photo, this one taken from the side to show her famous butt, the future Mrs. Kanye West wrote, "Yep, stole Kylie's bikini...she's not getting it back."

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Jenner, 16, posed in the bikini in multiple pics on Instagram earlier on March 12. "Oh haaayyy," she captioned one black-and-white pic of herself wearing the suit and standing next to a fresco painting of a mostly naked man.

Tell Us: Who wore it better: Kylie or Kim?

This article originally appeared on Usmagazine.com: Kim Kardashian Models Same Black Cutout Bikini as Sister Kylie in Sexy Selfie: Picture