(Yahoo!) - One bikini, two very different looks!

Kim Kardashian snatched up Kylie Jenner's two-piece in Miami on Wednesday, and shared a photo of herself wearing the tiny two-piece on Instagram. "Yep stole Kylie's bikini...she's not getting it back," the 33-year-old reality star captioned the pic.

Jenner, 16, posted photos of herself posing in the keyhole swimsuit around the Versace mansion earlier on Wednesday. "Oh haaayyy," she wrote alongside one black-and-white shot of herself.

Apparently, Kim felt the need to try it on for size, too.

"Quick swim before the Dash party!" she posted with yet another selfie of herself in the itty-bitty bikini.

Kim, Kylie, Khloé, Kourtney, and their mom, Kris Jenner, are all in Miami celebrating the opening of their new Dash store. Though they are "working," somehow the Kardashian-Jenner clan always manages to find time for selfies.

So… who wore it best?