They've been referred to as a sign of happiness, luck, good fortune, sexuality and wanderlust. Cultures all around the world have their take on gap teeth, and now—thanks to prominent figures who proudly flash the space in their smile—they're considered a mark of beauty and individuality. Here are a few of the stars who helped to make gap teeth fashionable, proving to men and women everywhere that they no longer need to be ashamed of their grins.
Comedy legend David Letterman was awarded the Mark Twain Prize for American Humor which "recognizes people who have had an impact on American society in ways similar to the distinguished 19th century novelist and essayist best known as Mark Twain."
Madonna turned 60 on August 16. The boundary-pushing Queen of Pop has spent four decades of her life in the spotlight. "I think the most controversial thing I have ever done is to stick around," she's said. "I'm one of the lucky ones and every day I count my blessings."