Mary Lambert Guest-Stars on "Faking It" Prom Episode

YH catches up with singer/songwriter Mary Lambert on the set of MTV's "Faking It" where she prepares for her guest appearance on the show's prom episode! She shares with us some of her own real-life prom experiences, plus she gives us her definition of "true beauty" and offers some tips on how to overcome nervousness, whether on stage or just in everyday life!