There needs to be a separate wing for Lisa Rinna in the Celebrity Plastic Surgery Hall of Fame. She's the Babe Ruth of tummy tucks, boob jobs and lip implants.

On yesterday's Today Show, the fake actress finally opened up about the latter, explaining why the heck her mouth looks big enough to French kiss every face on Mount Rushmore. At once.

"This is the first time I have told what I have done to my lips. 23 years ago, I had silicone put in my top lip not the bottom lip. [The look] made me who I am. But after years and years, you develop scar tissue," she said.

Which is bigger: Lisa Rinna's lips, or the odds of her ever having a successful acting career?

According to reports, the silicone hardened, causing the the scar tissue to expand. This led to a cortisone injection, which Rinna herself admitted was "gross."

Of course, the recent Playboy centerfold didn't give this interview purely for honesty's sake. She's in full-on publicity mode. Her book “Rinnavation” comes out today.