02/16/2014 AT 10:40 AM ET
Just call them the love club.
So what’s a girl to wear for a fun night of music and love? A festive blunt-cut wig with a tiara on top, along with a black crop top and black retro skirt.
As the night progressed, the “Dark Horse” singer got into the spirit, sipping a glass of Champagne and standing atop the sofa at her table to rock it out to Montel Jordan’s party classic, “This Is How We Do It.”
Before the lights came on and the club closed, Perry and Mayer made a quiet exit.
With reporting by MELODY CHIU