Find out how the 30-year-old singer and fashionista got her smoking' bod back after gaining 50 pounds during her pregnancy and giving birth to her adorable baby girl Blue Ivy Carter. She told her fans at an Atlantic City concert that her slim-down took a lot of work, saying, "They had me on the treadmill, I ate lettuce!" We wanted the full scoop on her fitness routine, so SHAPE interviewed her trainer Marco Borges. In this video, celebrity reporter Kristen Aldridge reveals what he said about Beyonce's workout and diet routine. For more celebrity workout tips and diet plans, check out the rest of our 10 Hottest Stars of Summer videos here.