Zac Efron hopped into his car outside of the Pantages Theater in Hollywood last night. He was one of many famous faces at the opening night of the musical Rock of Ages, after he took care of errands solo earlier in the day. Zac just returned to the West Coast from NYC, where he attended Fashion Week and joined Joe Jonas and Kellan Lutz at Calvin Klein. His off-again girlfriend, Vanessa Hudgens, has also been a staple at the runway shows, and she stopped to chat with us about working with Mary-Kate Olsen in Beastly on her way into the Alice + Olivia presentation on Monday. Vanessa continued her stylish schedule yesterday as well at Tibi and Diesel Black Gold.