The 78violet sisters dolled up in short dresses as Romy and Michelle, the two lead characters from the movie of the same name.
“Did someone say Romy & Michele? #postits,” Aly posted on Instagram on their way to the party.
AJ added with another shot, “Thanks for having us @katehudson ! Amazing party as usual!”
In case you missed it, check out Aly and AJ‘s Valley of the Dolls costumes, too.