Teen stars Vanessa Hudgens and Miley Cyrus attend Variety's Power of Youth event benefiting St. Jude's Children's Research Hospital.

Miley Cyrus, Giving Back
Miley Cyrus put the microphone down and headed to Haiti to do some charity work, teaming up with the Starkey Hearing Foundation to help distribute and fit hearing aids to more than 400 Haitians on Monday. It was her second visit to the island nation. "I felt so drawn to helping others hear for the first time and immediately wanted to look for another chance to go back and help again," Miley said.