Is there a Katy Perry and John Mayer collaboration in the works? Yes, or something like that.

Katy Perry on John Mayer: 'We're Doing a Lot of Collaborating'
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When “Extra’s” Ben Lyons caught up with Katy on the “Smurfs 2” white carpet in L.A. and asked if the two were working together, Perry playfully replied, “We’re doing a lot of collaborating.”

While Mayer couldn’t attend the premiere with his Smurfette, Katy wasn’t on her own. Grandmother Ann Hudson was by her side.

Staying true to her character, the “Firework” singer dazzled in a blue Tadashi Shoji dress.