Jessica Simpson is Getting Back in Her Daisy Dukes

Does a breakup do a body good? Jessica Simpson's breakup with Dallas Cowboys quarterback Tony Romo has apparently sent her back to the gym.

Simpson was seen leaving a Los Angeles gym on Tuesday. A friend of Simpson's told Ok! Magazine: "Right after Tony ended things, Jessica said, 'I want my old body back.'"

The source also said Simpson went into her kitchen with a trash bag and began clearing out all of the junk food. According to Ok! Magazine the singer has dropped 10 pounds in just 10 days of working out.

Romo and Simpson ended their two-year relationship earlier this month. Friends of the 29-year-old star said they were concerned about her after the break-up.

However, Radar Online reports that Simpson looked radiant in her first public appearance since the breakup at the unveiling of her father's newest music artist.