It's the return of the Pegacorn! (sorta)
Following a successful co-chairing duty at the Met Gala, Taylor Swift hit up Monday night's official afterparty at the Boom Boom Room atop the Standard Hotel.
But the pop star perhaps had the most comfortable soirée back in her hotel room for the after afterparty.
"After the after party is.. Well.. This. @haimtheband," Swift, 26, captioned a photo of her squad dressed in animal onesies holding boxes of pizza.
The "New Romantics" singer traded her sexy silver Louis Vuitton minidress and statement gladiator boots for a white unicorn one-piece while the Haim sisters went from their Rodarte gowns to a rabbit onesie and dog onesies.
And another Swift squad member was having a party in her animal onesie!
Sarah Hyland along with Jennifer Lopez and Hyland's cast mates from the upcoming Dirty Dancing remake had their own afterparty with outfits provided by the Modern Family star.