PRESS ASSOCIATION -- Lady Gaga is apparently planning a collaboration with Britney Spears.
The Poker Face singer was spotted backstage at Spears' Femme Fatale concert in Atlantic City, telling the pop princess she was a fan.
A source said to The Sun: "They sat for around an hour gossiping and talking about collaborating together on a track - Gaga already has two songs in mind."
Gaga - whose real name is Stefani Germanotta - has even considering swinging by Britney's tour in October so she can join her on stage.
Spears couldn't resist giving a shout-out to her famous fan at the gig, when she told fans: "I have a very special guest here tonight, Lady Gaga is here!" before blowing kisses at the Bad Romance singer, reported the LA Times.
Contrary to rumours surrounding their friendship, it appears the two singers have a mutual respect for one another.
Gaga penned a few tracks for Spears before she hit the big time, and Spears caught the Monster Ball when Gaga came through LA a year ago.