Britney Spears and Jayden James at the Gym (PHOTOS)

Britney Spears and her son Jayden James Ferderline are gonna work it on out!

The Circus singer and her four-year-old put in some time at a kiddie gym in Los Angeles on Thursday, getting some exercise and looking extremely cute while doing so. While Jayden opted for a Batman T-shirt accessorized with a fake tattoo on his neck, Brit-Brit went with a black backless number that brought a little glamour to the workout.

Click through the photo gallery to see more of Britney and her boy putting in some gym time. And make sure to drop by Paparazzi-Razzi for more fascinating celebrity photos.