Hollywood's Biggest Comebacks

You can't keep a big star down! See the celebs – Paula, Ben, RDJ, Drew – who've resurfaced with extra shine

DEMI LOVATO

At 18, the former Disney princess hit the skids when reports of erratic behavior surfaced, followed by some time in treatment and her announcement that she suffered from bipolar disorder.
The comeback: Though she's stressed that her recovery is ongoing, Lovato came out with a new album in 2011 (the appropriately titled Unbroken), which debuted at No. 4 on the Billboard charts. She became one of the most popular judges on The X Factor, before leaving in late 2013 to work on her music.