New York, Jan 24 : Vanessa Hudgens isn't a squeaky-clean star any longer, as the ' High School Musical ' star is playing a pregnant teen in the new film ' Gimme Shelter'.

Hudgens will feature in the film along with Rosario Dawson, who plays the role of a drug-addicted mom, the New York Post reported.

The 25-year-old prepared for the role by cutting off her locks and living in a shelter with homeless mothers for weeks. (ANI)