Joe Jonas attends Demi Lovato’s 18th birthday bash

In true gentlemanly fashion, Joe Jonas arrived to celebrate the 18th birthday party of his ex-girlfriend, Demi Lovato. Joe Jonas attended the bash at Buddakan in New York where Demi Lovato held court with her younger sister, family and friends. Demi Lovato gave out the biggest gift of all — a new house for her family!

Nick Jonas waved to his many admirers on his way in to greet the birthday girl and his fellow co-star in Camp Rock 2.