Hair Chameleon Demi Lovato Becomes a Blonde

Demi Lovato has gone back to blond.

The "X Factor" judge showed off seriously lighter (and straighter) locks at the 2013 National Children's Mental Health Awareness Day in Washington, D.C., on Tuesday -- the same day that she began streaming her latest album, "Demi," online ahead of its May 14 release.
Lovato, 20, was in D.C. to be honored with an advocacy award from the Substance Abuse and Mental Health Services Administration, for speaking out publicly about her struggles with bipolar disorder, as well as drugs and alcohol.