Missy Elliott debuts her DRAMATIC weight loss.

Missy Elliott shows off her slimmed-down figureCredit: Courtesy of Missy Elliott

Is that you, Missy Elliott?! The "Is That Your Chick" rapper looked skinnier than ever while performing at the Alexander Wang x H&M Collection Launch in New York City on Thursday, Oct. 16.

The hip hop star, 43, looked energetic and happy when she took the stage at the Fort Washington Avenue Armory, wearing a "Wang" baseball cap and leather pants. Elliott got the crowd on their feet, performing hits "Get Ur Freak On," "Work It," and "Lose Control."

Credit: Andrew H. Walker/Getty Images

In a Twitter photo, the star's weight loss was on full display. "Just got off stage thanks @ALEXANDERWANGNY and @hmusa for having me perform I enjoyed [muah!]" the rapper captioned a photo of herself backstage looking seriously slimmed down wearing a tracksuit and hat which read "You Can't Workout With Us."

Elliott has been vocal in the past about battling Graves' disease, an autoimmune disease that attacks the thyroid and can cause nervousness, excessive sweating, weight loss, and palpitations. The "Work It" singer had been staying out of the spotlight; she last released a studio album in 2005.

After getting off her medication for the disease, the rapper told Us in 2011: "I feel great… I'm completely managing the condition through diet and exercise.