So that's how Britney Spears has been working out her body! Synchronized swimming!

The popstar posted an Instagram video on Wednesday, featuring the singer playing around a pool in a hot pink bikini. She looks pretty damn good if you ask us!

Along with the vid, she wrote, "Putting in work in preparation for my tryout for the US Synchronized Swimming team. Rio here I come..."

Haha -- we'd love it if BritBrit was on the 2016 Olympics, but we have a feeling that's just a pipe dream!

Olympian or not, keep up the good work, Brit!