OK! EXCLUSIVE: Lea Michele Shares Her Best Diet Secret

In case you were wondering why Glee star Lea Michele is looking super svelte lately, the new issue of OK! gives you the answer.

OK! HOT GALLERY: THE STARS LIGHT UP THE GRAMMYS RED CARPET

"I'm a vegan," Lea tells OK!. "It makes me feel really good and bright." Lea doesn't eat meat and dairy, and says that brings pep to her acting abilities.

OK! HOT GALLERY: SAG AWARD WINNERS SHINE

"You need a lot of energy to play spunky Rachel Berry, so I've tried a lot of different things — and so far, this is working."

OK! NEWS: LEA MICHELE SINGS OUT IN SUPPORT OF GAY MARRIAGE

FOR ALL THE LATEST CELEB NEWS & PICS, CHECK OUT THE NEW ISSUE OF OK! ON STANDS EVERYWHERE!