Glad to see she's working on her fitness!

Yesterday, Kristen Stewart took time out of her busy day to get in a good workout at the gym in West Hollywood in her sleek Mini Cooper that looked to be in need a of a good wash.

The 24-year-old actress has been doing more than just keeping fit as she recently starred alongside Anne Hathaway and Brie Larson in Jenny Lewis' music video for her song, Just One of the Guys.

In the video, the Twilight star along with the rest of the ladies dress in drag, sporting tracksuits, wigs, hats and mustaches as they transform into men in the 80s-inspired clip.

Check out the video below. They sure know how to stick to a theme!