Temporary decals for teeth have been around for a few years now, but leave it to the always avant-garde Japanese fashion industry to make them chic. A recent spread in Ginza magazine
 shows off cute tooth decals and suggests that fashionistas are matching their nail art with their tooth art, and even their nail shape to their tooth shape. Fashion-forward young women are also matching their lipstick to their tooth decals and designing whole coordinating outfits around the look, whether they're wearing a ladybug decal to a picnic or a little blue anchor to the beach.
Tooth decals from brands like ToothArt  already exist here in the US, but they've just never caught on as a high-fashion item. If the haute young ladies of Tokyo have any say, however, they may well become a new thing. Given that grills have enjoyed lasting popularity on our side of the Pacific, it might not be that odd to see tooth decals become a cool accessory, too.
Source: Ginza