Demi Lovato: 'Late Night With Jimmy Fallon' Fashionista

Demi Lovato dolls up in a little black dress as she arrives at Late Night With Jimmy Fallon on Wednesday (September 5) in New York City.

The 20-year-old entertainer happily signed autographs for fans before she headed inside for her interview.

PHOTOS: Check out the latest pics of Demi Lovato

Demi stopped by the network to chat about tomorrow night’s 2012 MTV VMAs, where she’s nominated for Best Video With A Message.

“Less than 24 hours to my #VMA pre-show performance,” Demi tweeted “Wait until you see the show!!!!”