Kim Kardashian does this as well, but she's just an amateur when it comes to a particular beauty secret that should stay a secret.

Meet Tess Christian, a 50-year-old British woman who stopped smiling and laughing 40 years ago in an attempt to stop wrinkles from forming on her face. That means she started this at the age of 10! Yikes!

She reminds me of one of my exes, who never laughed at any of my jokes. It's obvious who was the problem in that relationship.........

Tess says that she didn’t even smile when her daughter was born. “Everyone asks if I’ve had Botox, but I haven’t, and I know that it’s thanks to the fact I haven’t laughed or smiled since I was a teenager,“ she explains. “My dedication has paid off, I don’t have a single line on my face.“

Tess admits that she is “vain“ -- mighty nice of her to do that, eh? --and wants to remain young, but points out, “It’s not as if I’m miserable. I love life. I just don’t feel the need to show it by walking around with a grin on my face.“

Check out Tess' full story -- including some of her frowniest pictures over the years -- here.

Remember, nothing you wear says more about you than your smile.