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It looks like blondes do have more fun! Lady Gaga visited Britney Spears in concert on Saturday night during her residency at the Planet Hollywood Resort & Casino -- and it looks like the popstars had a blast together.

Wearing a sweater minidress, Gaga tweeted a pic of herself and Britney, who was outfitted in a crystal jumpsut, and wrote, "Me and Brit Brit <3 #Applause4Britney @britneyspears we had so much fun at your show!"

We've heard rumors that Gaga and BritBrit were in talks of doing a collaboration -- and this almost seems like an unofficial confirmation! We couldn't be more excited!

The "Applause" singer, who joined Brit’s manager Larry Rudolph, was spotted singing along, dancing around and even blowing kisses to the "Toxic" singer while seated in the VIP section of the Vegas show.

It sounds like Gaga had a grand ole time because Mother Monster couldn't stop gushing about her new BFF, even writing, "She looked so gorgeous, the show was so much fun, and her dad gave us THE BEST BBQ. It was a #MonsterParty!"

Sounds like an all around delicious night to us!