You see it everywhere on the red carpet, in the tabloids, on stage. They call it the 'Hollywood Smile' - those perfect sets of pearly whites gleaming in the spotlight. But not everyone gets to the top in Hollywood with naturally perfect and straight teeth. In a lot of cases, that comes afterwards. You might be surprised at the number of stars who have had work done on their chompers. And fortunately for us we've got miles and miles of photographic evidence documenting the sometimes shocking before and afters. Below are ten of the most glaring examples.

Royal wedding fever has taken hold of everyone on both sides of the pond - but perhaps none moreso than a plumber from England named Barmy Baz Franks. Barmy recently spent £1,000 and six hours in a dentist's chair getting Prince William and Kate Middleton's faces tattooed on his teeth!

If you think the dentist's office is scary now, imagine how it was centuries ago when these dental tools were used...

Bling-frosted grills have been part of the hip-hop scene since the early ‘80s, when Flavor Flav and other rappers in New York started showing off their shiny gold caps. Since then dozens of rappers and other celebrities have jumped onto the wave, sporting every sort of grill from smooth, solid gold to sparkly, diamond-encrusted veneers.

Here are some of the baddest celebrity grills on the scene, including some you might not have expected…

It’s one of the latest growing trends, and one of the least painful ways to get a tattoo. Curious ink fans are sporting grill tats, tattoos inked directly onto their front teeth, for a nice piece of colorful bling to show off to their friends.

The tats don’t need any recovery time, and only require a few hours to dry and set before you can eat, touch them and even brush your teeth.