It seems like Demi Lovato has already led many lives. The singer, songwriter, actor and activist, who made her acting debut at age 8, has done so much, and been through so much, that it’s hard ...

Sources tell PEOPLE Demi Lovato has agreed to enter a drug treatment center following a relapse and overdose that's left her hospitalized for the past 10 days Dave Quinn is a Senior Editor for PEOPLE.

Demi Lovato performed at the Caron Treatment Centers' New York Gala at Cipriani looking like a total knockout wearing a black leather trench-style mini dress that matched her long, dark hair.