The affair was inspired by a new fashion exhibit at the museum called "Heavenly Bodies," which features artifacts loaned out by the Vatican. Rihanna was there, wearing an impressive pope-inspired outfit, miter and all.
But the event soon drew criticism from some Christians.
Piers Morgan, the conservative British TV personality, wrote a scathing piece about "flesh-flashing celebrities" disrespecting his religion.
Similarly, there was an op-ed published in Business Insider which claimed there was a double standard for what people consider cultural appropriation.
Some on Twitter were quick to argue that an appropriation of someone's culture involves an inherent imbalance of power.
This was echoed by Adrienne Keene, a writer and the creator of Native Appropriations, a site dedicated to "discussing representations of Native peoples, including stereotypes, cultural appropriation, news, activism, and more."
Well, the Met Gala has found another unlikely defender: Cardinal Timothy Dolan, head of the New York Catholic Archdiocese.
"There were some aspects that looked like kind of a masquerade party, a Halloween party," Dolan told SiriusXM’s Catholic Channel about the event, which he also attended.
"I didn’t really see anything sacrilegious. I may have seen some things in poor taste, but I didn’t detect anybody out to offend the church," he said.