In an eye-opening documentary, 'Child Star,' co-directed by Demi Lovato, Hollywood icons Drew Barrymore and Demi Lovato share their harrowing experiences with drugs and alcohol as child stars. The film sheds light on the pressures and dangers faced by young celebrities,

In the new documentary 'Child Star', Demi Lovato spoke to Drew Barrymore about their difficult childhoods and the fact they were exposed to drugs since a young age