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Kourtney Kardashian clearly cuts loose during her girls-only trip to Mexico and Puerto Rico. After sharing a number of sexy bikini pics from the vacation, she now shows how wild her post-birthday celebration with her friends is.

The 38-year-old reality TV star shares on Snapchat a clip of someone skinny dipping, rolling around in a pool. It's unclear who the lady in the video is, but the dark-haired woman is baring her naked booty. "When your friends stay naked," Kourtney captions it.

Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 6:10 PDT

She additionally shares clips of her dancing with her friends in her hotel room. She clearly has a lot of fun as she is twerking in a revealing white outfit.

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Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 2:25 PDT

Twerk it ✔️

Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 4:05 PDT

Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 4:38 PDT

Kourtney arrived in Mexico over the weekend. She is joined by her sister Kim Kardashian and their close friends, including Brittany Gastineau, Malika Haqq, Larsa Pippin and Kim's assistant Stephanie Shepherd. On Monday, Kim revealed that her big sis "threw up in bed 4 times and slept in it."

Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 4:41 PDT

🔥🔥🔥🔥🔥

Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 4:45 PDT

Sebuah kiriman dibagikan oleh Kourtney Kardashian Snapchat (@kourtneysnapchat) pada Apr 25, 2017 pada 4:46 PDT