Kendall Jenner shared a sexy bikini selfie on Instagram — but it was her belly button that got all the attention.

Wearing a black-and-white bikini, the 21-year-old beauty showed off her model figure in the headless mirror selfie.

"Chaos," she captioned the snap.

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This is not the first time Kendall's navel has been the center of attention. Back in 2013, the KUWTK star was criticized online for her abnormal belly button.

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chaos

A post shared by Kendall (@kendalljenner) on

"Just when I thought Kendall Jenner was really perfect, I saw a picture of her belly button…" one fan tweeted, while another wrote, "Every person has flaws. Even the most beautiful of people. In @KendallJenner's case, it's her belly button."

Her tiny belly button is definitely interesting, considering Kendall just revealed she suffers from trypophobia.

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"Trypophobics are afraid of tiny little holes that are in weird patterns. Things that could set me off are pancakes, honeycomb or lotus heads (the worst!)," she wrote on her blog. "It sounds ridiculous but so many people actually have it! I can't even look at little holes — it gives me the worst anxiety. Who knows what's in there???"

We still love you Kendall! For more celebs who are proud of their weird belly buttons, click through the gallery below!