So how does Gaga (real name: Stefani Germanotta) stay so trim? She told Sirius Morning Mashup in February: "I am on the drunk diet... I like to drink whiskey and stuff while I am working. But the deal is I've got to work out every day, and I work out hung over if I am hung over. And it's about the cross-training and keeping yourself inspired. I have to say, I do a ton of yoga."