Britney Spears Greets Lady Gaga Backstage at Vegas Show!

Britney Spears and Lady Gaga pose for a photo backstage before the Piece of Me concert on Saturday (February 1) at Planet Hollywood in Las Vegas.

“Me and Brit Brit. #Applause4Britney @britneyspears we had so much fun at your show!” Gaga captioned the photo on her LittleMonsters.com website. “She looked so gorgeous, the show was so much fun, and her dad gave us THE BEST BBQ. It was a #MonsterParty!”

“On my way to #BritneyBitch in #ARTPOPStyle long blond hair, androgynous wear,” Gaga tweeted earlier in the night.

Who else thinks that we need a Gaga and Britney collaboration ASAP?! Let’s make it happen!

Also pictured inside: Jeff Beacher of Beacher’s Madhouse Las Vegas being dominated by the pop princess herself at the evening’s show.