Britney Spears: Rehearsal Studio Gal!

Britney Spears keeps it casual comfy while exiting a rehearsal studio with her bodyguard on Tuesday (April 23) in Thousand Oaks, Calif.

The day before, the 31-year-old entertainer was spotted grabbing groceries with her boyfriend David Lucado.

PHOTOS: Check out the latest pics of Britney Spears

“I have always loved the Smurfs as a kid and now my boys are the biggest Smurfs fans EVER. I wanted to surprise them with a song in the movie,” Britney recently shared about recording a song for the film.

10+ pictures inside of Britney Spears heading a rehearsal studio…