Kourtney Kardashian Waterslides off a Yacht with Mom Kris Jenner & Corey Gamble!

Kourtney Kardashian rocks a sexy bathing suit while aboard a yacht on Wednesday afternoon (September 7) in St. Tropez, France.

The 37-year-old reality star was spotted watersliding off of the yacht into the ocean with mom Kris Jenner and Corey Gamble.

PHOTOS: Check out the latest pics of Kourtney Kardashian

Kourtney and Kris then hopped on a jet ski and rode around the water while enjoying the warm weather.

Later that day, Kourtney, Kris, and Corey dressed up as they took a boat mainland for dinner.

FYI: Kourtney is wearing a white Varley crop top.

30+ pictures inside of Kourtney Kardashian, Kris Jenner, and Corey Gamble enjoying their vacation…