Reese Witherspoon Sings Rihanna & Calvin Harris Hit as a Bumble Bee!

Reese Witherspoon makes her way inside her gym to get in a workout on Sunday (September 4) in Brentwood, Calif.

The 40-year-old actress posted a video of herself singing Rihanna and Calvin Harris‘ “This Is What You Came For” as a bumble bee!

PHOTOS: Check out the latest pics of Reese Witherspoon

“Trying to 🐝 @rihanna 😉 What do y’all think!? #TrafficJamming #ThisIsWhatYouCameForm” Reese wrote on her Twitter account, along with the video.

Watch it below!