In this excellent interview, Vanessa Hudgens reveals how her role in Gimme Shelter changed her in more ways than just her shocking appearance in the movie. The former High School Musical sweetheart reveals how playing a real life pregnant runaway made her appreciate how easily she could have found herself in trouble and how lucky she has been to ended up where she is. Vanessa talks about hacking off her hair and piling on the pounds for her role and the time she spent in a real shelter for threatened women.