Is the imaginary, fan-created feud between Lady Gaga and Britney Spears over now that the ladies made nice at a Britney concert? We’ll see — but as for the pop diva hotties themselves, they couldn’t have been sweeter to each other as Maddie Spears’ aunt announced a “special guest” in the audience on the Atlantic City stop on her Femme Fatale tour last night. It was, of course, Mother Monster. We can’t help but wonder what Gaga thought of the show, considering her dig at performers who don’t sing live in concert during her own Monster Ball show. Head below to see a video of Britney’s shout-out to Jo Calderone’s more feminine alter ego.

Disappointed that no catfight ensued? Or are you happy to see these two ladies getting along without the rivalry that many fans have imagined beteween them?

You might also like

Is Britney Spears Headed To Las Vegas? Britney Spears has already has already grabbed enough headlines in Las Vegas —...

Watch MTV’s ‘Britney Spears: I Am The Femme Fatale’ Trailer Britney Spears allowed MTV cameras to follow her around as she recorded and continues...

5 Things We Learned About Britney Spears In Her Twitter Q&A Our First Lady Of Video Teasers, Britney Spears, conducted a Q&A on Twitter this...

2011 MTV Video Music Awards: Live Blog Coverage The 2011 MTV Video Music Awards kick off tonight at 9 p.m. EST, and we’re here,...