Lady Gaga Cheers For Britney Spears [VIDEO]

Fans at Britney Spears‘s Femme Fatale show in Atlantic City Saturday night were graced with the presence of not one, but two, pop sensations. Mother Monster herself, Lady Gaga, was in the crowd.

In a video from the concert, Spears introduces Gaga to the audience, saying “I have a very special guest here tonight, Lady Gaga is in the house!” Gaga then stood up from her seat, waved, and made a heart sign with her hands to Spears, who did the same right back.

E! Online reports that Gaga enjoyed herself throughout the concert and “accidentally stole the show when the crowd started chanting her name and rushing over to snap pics” during a break in Spears’s performance.

Spears, however, seemed more honored than upset at the incident. Later, she tweeted “So amazing to have the beautiful @LadyGaga at the show in AC tonight. Love you girl.”

Check out the video (which includes Brit performing “I’m a Slave 4 U”) after the jump, and then let us know what you think by posting in the comments section below. Which pop star is do you prefer– Gaga or Britney?