Actress Emmy Rossum has to steer clear of gluten in her diet or risk having "Angelina Jolie" lips.

The Phantom of the Opera star admits she has to be strict about what she eats to avoid swollen lips and canker sores.

She tells Complex magazine, "I get awful canker sores almost immediately and lips get Angelina Jolie. I don't mind that. It's the canker sores, because then you can't use your lips."