Despite a complicated battle with personal and weight issues, Demi Lovato continues to step out and exude confidence with each of her public appearances.

VIDEO: Demi opens up about the "darkest time of my life"

The "Skyscraper" singer rocked a cleavage-baring leopard-print minidress by Vivienne Westwood for her appearance on Late Night With Jimmy Fallon in NYC Tuesday. The stunning starlet wore her hair in side-parted, over-the-shoulder waves and topped off her beauty look with the ultimate confidence move -- a bright red lip.

PHOTOS: Demi through the years

The Latina star, who admitted to Jimmy Fallon that she doesn't speak Spanish, accessorized with a Beverly Jill Designs bracelet, Philip Press earrings, and black Christian Louboutin peep-toe pumps.

VIDEO: Demi's first post-rehab performance

When critics ridiculed the 19-year-old's healthier, curvier figure on Twitter during the MTV Video Music Awards August 28, she immediately fired back.

"Guess what? I'm healthy and happy, and if you're hating on my weight you obviously aren't," Lovato wrote.

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