Perry switched outfits in the Metropolitan Museum of Art bathroom. Jennifer Lopez was in the bathroom too, and one guest caught Lopez's reaction to Perry's outfit change. She was completely unfazed, as Buzzfeed first reported:
Perry did this year's Met Gala solo and spent her evening with a bunch of her celebrity friends. Her fiancé Orlando Bloom was with her during the 2018 Met Gala, although they didn't walk the red carpet then.
WATCH: Lady Gaga's Epic Entrance Into The Met Gala.