It turns out that celebrities at the Met Gala used the bathroom as, you know, an actual bathroom, and not just a hangout spot to take selfies and violate the Health Department's no-smoking rule. Or, at least, Katy Perry did.
"This seems like this would be hard to use the restroom or do anything," Ellen observed.
"Yeah, you know, there was a lot of self-control," Katy explained. "Practice and GoGirls. You know, those little contraptions where you get to urinate standing up."
I did some googling and, yes, GoGirl appears to be a funnel that allows people with vaginas to easily pee standing up.
"I've used them in several music videos because I always find myself in this predicament where I have a very extravagant, unrealistic, impractical costume on," she further elaborated.
Hm, yes, I could see how such a device could be helpful while, say, wearing a latex bodysuit and being rolled around in flour by a fleet of chefs as Katy did in her most recent video for "Bon Appétit." Thanks for the life hack, Katy!