Kylie Jenner wants fans to know that lip injections aren't 100% to thank for her infamously plump pout!

In a series of Snapchat videos, the 18-year-old reveals the real secret behind her fuller lips: a subtle pucker.

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"Everyone keeps thinking I'm making my lips bigger, but this is them normally," she says without smiling. "And then this is when I push them out and do my little face."

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The beauty mogul even took pictures to show followers the difference. "The fact that we still talk about my lips is so crazy," Kylie ultimately concluded.

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In September, the reality star spoke at length about her beauty regimen, telling the New York Times, "I still do Juvéderm for my lips. I go to Dr. Ourian in Beverly Hills. He's the best, and he's super natural about it. I was going to somebody before, and it was just looking crazy."