Is Katy Perry dropping album hints at the Met Gala?

When you're co-hosting the Met Gala – which this year honors the work of influential Comme des Garçons designer Rei Kawakubo – it's go big or go home.

Katy Perry went big.

The pop star arrived on the steps of the Metropolitan Museum Of Art a futuristic lady in red, donning a custom Maison Margiela ensemble by John Galliano. But look closer: Her gauzy headdress featured silver coils, mirrors and the word "Witness" embroidered over her forehead.

A hint about the name of her upcoming album? Fans sure think so.

And of course, Katy's hands were decked in diamonds. All the diamonds.

Stars hit the Met Gala red carpet

Celebrities arrive at the Met Gala in New York City.