Ioan Gruffudd at the Glamour Women Of The Year Awards held at Berkeley Square Gardens. London, England - 05.06.07

The Fantastic Four actor is so desperate for a Hollywood grin that he wears a special tooth retainer to straighten out his smile while he sleeps.

He says, "I wear an orthodontic retainer in bed at night. But I'm not embarrassed about it. I realised a while ago that acting is a business and my livelihood."

Source: WENN