Lara Stone's got one. So has Madonna and True Blood's Anna Paquin. And now, apparently, a wide gap between your two front teeth - a diastema, in medical speak - could mean you're hot property. Well, at least if New York Fashion Week is anything to go by, that is.
According to the Wall Street Journal, models with gappy grins are all the rage at the shows. That's not exactly going to please anyone who's spent a considerable fortune getting their gap 'fixed' by using braces, dental bonding or highly expensive porcelain veneers.
It's not the first time gappy smiles have been a sought-after attribute. Back in the 14th century, Chaucer's famous novel, The Canterbury Tales, featured a character with a gap-toothed grin called the wife of Bath. Her smile was thought to be highly alluring in those days too (well, she did claim she'd been married five times).
Fast forward back to today, and just a few weeks ago dental experts were explaining how tongue studs could damage your teeth, including creating gaps.
Researchers writing in the Journal of Clinical Orthodontics warned the barbell studs can get wedged in the space between your two front upper teeth, causing a diastema. There again, tongue piercings may also fracture your teeth as they clack against them - and broken teeth are not a good look (at least, the powers that be in the fashion world haven't declared they are - not yet, anyway).
So what's your verdict on gappy smiles? Do you think they look sexy?