Jennifer Lawrence hits the gym before gassing up her car on Tuesday morning (August 14) in Santa Monica, Calif.

The Hunger Games starlet turns 22 TODAY! Be sure to send her tons of birthday wishes in the comments!

PHOTOS: Check out the latest pics of Jennifer Lawrence

The Hunger Games DVD comes out in less than a week!

Costar Jacqueline Emerson chatted with MTV about a few of her fave features: “I love the documentary. A lot of stuff in that, I didn’t know. I didn’t really know how the editing process worked or, like, all the different layering and CGI, so that was fascinating to watch.”

15+ pics inside…