Kim Kardashian's Beauty Secret Is Genius But Kinda Sad

Kim Kardashian, 38, doesn't look a day over 28, and there's a surprising reason why.

While at Mario Dedivanovic's Master Class over the weekend, someone asked Kim K to share her secret for smooth skin.

"Don't smile," she replied.

That's one way to swerve laugh lines!

Source: Cosmopolitan; photo: Getty Images