Miley Cyrus’ younger sister Noah Cyrus isn’t a little girl anymore!

The 17-year-old surprised fans by showing up to the Fifty Shades Darker LA premiere on Thursday, Feb. 2, in a sheer dress that revealed a matching bra and hot pants underneath.

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This isn’t the first time that the up-and-coming singer has raised eyebrows with her style. Noah channeled a Kardashian at Kylie Jenner’s 18th birthday party in 2015, rocking platinum blonde hair extensions and heavy makeup (including a plump pout to match the celeb of honor).

MORE: Miley Cyrus Wants to Star in Another Movie With Fiancé Liam Hemsworth!

The teen has been busy following in her sibling’s footsteps, and released her first single, “Make Me (Cry),” on Nov. 14, which features artist and producer Labrinth. She previously recorded a tune for the Japanese animated film Ponyo with Frankie Jonas.

When discussing her decision to pursue a career in music, Noah explained, "My dad [Billy Ray Cyrus] always had me sing alongside him while he played guitar. He taught me how to harmonize to an old song of his, 'Missing You.' Writing is the best way to get your mind clear. It's also a great way to explain your past or what you hope for the future."

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Noah and Miley in 2015.

And the brunette beauty has received some amazing words of wisdom from Miley on how to deal with life in the spotlight. “Miley always says, 'Don't ever look yourself up or read your comments, because you're gonna see stuff that you don't want to see.' That's the best advice ever. If it's making me happy, then it's working,” she told Rolling Stone.

But new music isn’t the only thing that Noah has to look forward to. The teen spoke to Life & Style in November about her sister’s upcoming wedding to Liam Hemsworth, revealing that the 24-year-old will be a “pretty chill” bride.

Scroll through the gallery below to see more celebrity siblings who are all grown up!