Katy's diamond grill is the talk of the red carpet

We're not ashamed to admit that we had to look up what a grill is.

Katy Perry is known for making an impression on award ceremony red carpets, but at the last night it was her teeth that were in the spotlight, rather than her… um… other assets.

(Picture: Doug Peters/PA Wire)

Perry wore the toothy sparkler to promote new single Roar, which she performed live to close the show.

Here's a full-length shot of the animal-print dress, for those of you interested in that kind of thing.

(Picture: Doug Peters/PA Wire)