Production on 'HSM: 3' to Begin in March

It's one of the most highly-anticipated sequels, and only "Extra" can reveal secrets from "High School Musical: 3" directly from the stars.

Vanessa Hudgens and Ashley Tisdale came to "Extra" backstage at the American Music Awards, where they revealed that production on the Disney hit will begin in March and rehearsals will begin in February.

Watch the video for more "HSM: 3" secrets and candid confessions from Vanessa.