The Metropolitan Museum of Art Costume Institute benefit, where celebrities dress up in extravagant outfits to have dinner at the Met but do not burglarize it, was last night. Known colloquially as the Met Gala, it’s like an awards show without the awards — pure, unadulterated red carpet. This year, the theme was camp. It’s a slippery thing to define! The dress code: “studied triviality.”

Here’s what happened after celebs ascended the red carpet. “I was called camp so many times,” Joan Collins told us. Bless! “Everyone thinks I’m Bella,” Gigi Hadid told us. Yikes!

In the cold hard light of the morning after, the reviews are in. Writes our fashion critic: “Were we laughing with them, or at them? My guess is the latter, at least most of the time. They were sacrificing themselves for our own poisonous pleasure, and the associate clickbait that will allow different brands to claim they — not the people involved — won the night.”

Last night, the first unexpected thing was the number of outfits Lady Gaga wore on the red carpet. (Four.)

The second was Billy Porter, the “Pose” actor, wearing a golden bodysuit and wings in a tribute to one of the looks from the 1975 Diana Ross film “Mahogany.” (The film was suggested as inspiration by Ryan Murphy, who suggested that Mr. Porter, too, wear multiple looks. But the actor didn’t “want to work that hard.”)