Katy Perry Shares Crazy Costume Photo Ahead of Prismatic World Tour Kick Off

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While her pals Rihanna and Taylor Swift were attending the Met Gala in Manhattan, Katy Perry was busy preparing to for her Prismatic World Tour.

The tour, which kicks off tomorrow night in Belfast, Ireland, promises to feature some wild costumes, including one very large dress.

The “Roar” singer shared this photo with her nearly 5 million Instagram followers yesterday with the caption: “2 DAYS TILL #ThePrismaticWorldTour!!! Tried to come to #TheMet tonight but my dress wouldn’t fit through customs  @voguemagazine HAVE A BALL TONIGHT KIDS! Yin Yang dress by @jwujek & @marcosquared

The 29-year-old, who may or may not be dating DJ Diplo, also shared some costume sketches for the upcoming tour, designed by Roberto Cavalli.

Katy begins the U.S. leg of her tour in June.