Kendall Jenner Debuts Pierced Nipples as She Goes Braless at Party -- See the Pics!

That's a bold new look, Kendall!

That's a big change, Kendall Jenner!

The 19-year-old reality star stepped out at a New York Fashion Week party on Wednesday wearing a see-through white dress and no bra that appears to reveal a recent nipple piercing.

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The jewelry is even more apparent in this sheer top Kendall wore while walking the Diane Von Furstenberg runway on Sunday.

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Kendall has taken her style in rebellious directions before. In June, the model ignored her sister Kim's advice about tattoos, and got a dot tatted on her middle finger.

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You may practically need a magnifying glass to see it, but it's still a tattoo!

Meanwhile, as Kendall displays a new look for her boobs, her 18-year-old sister Kylie is denying rumors she had hers done.

"I'm gonna share with you guys one of my tricks," Kylie says in a video, explaining how she got her much fuller look. "I don't really share this with a lot of people, but everyone thinks I've gotten a breast augmentation recently. I haven't. I just use the Bombshell by Victoria's Secret."

"It's life-changing," she adds. "I've gotten all my sisters on it, all my friends, and if you ever want the look of bigger breasts, that's what I do."

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Watch Kylie's boob revelation below.