Kylie Jenner at the Mugler Couturissime Exhibition Opening in NYC

made a show-stopping appearance as she in earlier Tuesday evening.

The 25-year-old makeup mogul hit the star-studded red carpet in a black strapless Mugler gown that cinched in her svelte hourglass frame.

However, Kylie's dress was not the show stealer as she added a diamond crown atop her head that sparkled under the bright lights and camera flashes.

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