Noah Cyrus, 15, Shows Up in Skimpy Crop Top to Kylie Jenner's Birthday Party

The teenager seems to have grown up over night.

Noah Cyrus seems to have grown up over night!

Miley Cyrus' 15-year-old sister
showed up to Kylie Jenner's 18th birthday party on Sunday wearing a show-stopping style.

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Noah, who went blonde for the party, donned an all-black outfit that included a skimpy crop top, skinny jeans and thigh-high boots. As for her makeup, Billy Ray Cyrus' daughter wore silver lipstick and big black lashes.

If we didn't know better, we'd say she's channeling Kylie's style with this look.

Noah's makeover was a far cry from her everyday look. Here she is as a brunette and nearly makeup free.

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What do you think of the teenager's skin-baring fashion statement? Is it age appropriate?

Noah's older sister Miley has defended her own skimpy style. "I'm using it as a power stance," the 22-year-old singer told Time magazine of posing nude and performing with strategically placed pasties. "It's funny to see people try to look me in the eye."