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A photo posted by Kylie (@kyliejenner) on

Kylie Jenner is back in a bikini.

The 19-year-old Keeping Up with the Kardashians star, who often showcases her figure in swimwear and other revealing outfits, posted on her Instagram page Saturday photos of her crouching inside shallow water in a pool, located a lavish property, while wearing a strapless, strappy black thong bikini.

"Fill yourself with adventure," Kylie wrote.

She had also shared photos of her wearing another black bikini Friday.

Kylie, boyfriend Tyga, sister Kendall Jenner are vacationing in Miami with friends. The three are among many celebs who are in town for the Art Basel in America international art fair. On Friday night, they partied at a nightclub.

A photo posted by Kylie (@kyliejenner) on

A photo posted by Kylie (@kyliejenner) on

She posted on her Snapchat photos and videos from their night out, including a clip of her older sister grinding on her.

Kylie wore a skimpy brown mini dress. She modeled the outfit in front of her friends—and Snapchat fans—before they hit the town.

One of her friends also pranked Kylie by filming her response while walking in on her in the bathroom.

"Oh my God!" Kylie shouted.