Transformations rarely come as thick as the one made by Vanessa Hudgens for "Gimme Shelter." The sweet-cheeked kids-show chanteuse tosses on the hoodie from the bottom of the pile of dirty clothes. She becomes Apple, a teenage wretch escaping from her life with an abusive mom. This street child isn’t above cutting her hair in clumps or eating pizza out of a dumpster. That was not a skill learned on the set of High School Musical. "Gimme Shelter" starts out looking like "The Blind Side"