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Demi Lovato stepped out in NYC today looking perfectly put together, and we have to admit ... we've never seen the singer lookin' so sexy!

The 19-year-old star hit a fashion high note in a peach blouse and black leather jacket, but what we're really loving is her lustrous locks. Miss Lovato seems to have taken a page from Kim Kardashian's book and gotten herself some extensions! Maybe she's sexing it up to show her ex, Wilmer Valderamma, what he's missing?!

Although the "Unbroken" songstress and the actor only broke up a couple months ago, he's already been spotted out in NYC with a new gal -- a model -- named Rachelle Goulding ... poor Demi!

The former Disney star's MTV documentary "Stay Strong" aired Tuesday, and we have to give her props for being so open about her struggles with an eating disorder and self harming.