SAT, 07 NOVEMBER 2009 AT 6:22 PM

Raven haired Demi Lovato sports a vintage AC/DC t-shirt as she leaves a dance class in North Hollywood on Friday afternoon (November 6).

The 17-year-old powerhouse singer met up with her Camp Rock 2 costar Jordan Francis, who was teaching the class and big sis Dallas.

Demi tweeted over the past week since she has been working out with Jordan, saying, “@officialjman is killing me right now. hahaha dance class with him. This routine is siiiick.”

Source: Just Jared Jr.