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.

"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."

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."