Kate Hudson's been working hard to get her body in top form, and now the Oscar-nominated star is showing off the end results of her efforts.

Posing in a cute bra and boyshort combo, the 36-year-old actress showed off her impressive abs in an Instagram pic she posted on Tuesday.

"This little bra and boyshort with little tiny hearts all over it," Hudson wrote, tagging the pic "#SneakPeek #ValentinesDay2016 #fabletics."

WATCH: Goldie Hawn & Kate Hudson Flaunt Their Amazing Beach Bods in Greece

More On This...

Actually, Hudson – who co-founded Fabletics, was doing more than just bragging about her physique. She was really showing off one of the many sporty, sexy items which Fabletics will make available in time for next year's Valentine's Day.

And Hudson isn't the only star responsible for sexy, fun athletic wear. Rihanna, Rita Ora and others are getting into the game with their own striking fashion lines. Check out this video for a look at the stars who are giving gym clothes an upscale makeover.

Four4Four: Holly Madison wouldn't let daughter pose in Playboy