These days women will do just about anything in order to get plumper lips. There are new products for those of us who aren't brave enough go under the knife (and according to StyleList, some of the actually work!). But, if you're a celebrity, new lip glosses promising to make your lips look juicy and luscious aren't enough. All kinds of A-listers are hitting up their plastic surgeons for a hit of collagen.

Celebrities who have surgically enhanced kissers

Heidi MontagJessica SimpsonDonatella VersaceLisa RinnaLara Flynn Boyle

Some of the most famous lip jobs in recent history belong to Jessica Simpson, Lindsay Lohan, Britney Spears, Lisa Rinna, Lara Flynn Boyle, Donatella Versace and Heidi Montag.

A while back, Jessica talked about what she did to her face saying, "I had that Restylane stuff. It looked fake to me. I didn't like that. But... it went away in, like, four months. My lips are back to what they were. Thank God!"

The easiest way to check if someone's lips are unnaturally enhanced is to see if the top lip is as large or larger than the lower lip. Normally, a top lip is significantly less plump than a bottom lip. If it's not, that's a pretty good sign that the pout might be the work of collagen.