Katy Perry & Gwen Stefani Buddy Up At Jennifer Meyer's Exclusive RTW Collection Launch!

Katy Perry and Gwen Stefani strike a pose together while attending the Barneys New York XO Jennifer Meyer Ready-to-Wear Collection Celebration on Wednesday (November 18) in Los Angeles.

The two singers were joined at the event by Nicole Richie, Gwen‘s boyfriend Blake Shelton, Erin and Sara Foster, Kelly Rohrbach, Kevin Connolly and girlfriend Sabina Gadecki, Debby Ryan, fashion guru Crystal Lourd, Kris Jenner and boyfriend Corey Gamble, and the designer herself Jennifer Meyer.

Kris‘ daughter Kim Kardashian recently revealed what she thinks about Corey and their relationship.

“It’s been so much fun just to see my mom happy,” Kim told People. “My mom has had such a hard year and I think it’s been refreshing to see her have a good time. He’s such a nice person. She can connect with him and go to the movies with him, work out with him. It’s the little things.”

Barneys New York XO Jennifer Meyer is an exclusive ready-to-wear capsule collection for Fall 2015, designed in collaboration with jewelry designer Jennifer Meyer. The collaboration marks a 10-year partnership between Jennifer Meyer and Barneys New York.

25+ pictures inside of Katy Perry, Gwen Stefani and others at the launch celebration…