Katy Perry knows how to stand out in a crowd.

The 31-year-old "Roar" singer will be one of many stars putting her best foot forward on the 2016 Met Gala red carpet Monday. Though Perry has not revealed exactly which designer's duds she'll be in, one thing is known: her dress is a tad fussy. "I'm wearing a really large thing tomorrow, which will be very difficult to use the restroom in. I might just wear a diaper. I don't really care. I am just going to be looking around for people to help me to the restroom," she told reporters Sunday at a CoverGirl event, held at The Waterfall Mansion in New York City. "I'll feel like one of those brides or something, but there's a lot going on with the dress."

The pop star was promoting the CoverGirl Katy Kat Collection, which includes 13 demi-matte lipsticks and two mascaras, in black and blue. "I already know I'm going to wear the Perry Panther and I'm going to attempt to wear the Perry Blue Mascara and keep everything a little more simple," she said of her Met Gala look. "Those are already two striking colors that you don't necessarily always look to for your eyes and lips, so in that way, it's different."

Perry told E! News her beauty regimen doesn't change much leading up to a big event like the Met Gala. "It's hard, because New York is all about nightlife and lack of self-control, so I'll try and put myself to bed with a Sleepytime tea tonight." Thankfully, the event isn't until later. "I'm not great with mornings," she said. "I'll probably have a facial this evening and do some of those LED lights—which are probably a crock of crap—but I do them anyway."