EXCLUSIVE PHOTOS - Demi Lovato Celebrates Her 19th Birthday With Bowling, Red Bull And Beer?

Disney actress/popstar Demi Lovato was bowled over by her friends' surprise birthday celebration Friday night. The newly-19-year-old had her official birthday party Thursday night at Beacher's Madhouse at the Roosevelt Hotel in Hollywood but last night, her pals came together to organize a night of bowling at Pinz in the Valley.

Demi emerged from the bowling alley at 1:30am, with a pin signed by all her friends. But the party wasn't over yet! Lovato and a mystery man headed to 7-11 to pick up something for the AFTER-party at a friend's house. While Demi stuck with Red Bull to give her enough energy to stay up the rest of the night/morning, her pal picked up some Miller Lite. Two more years and you can join in, Demi!