I hope Britney & Christina collaborate and make the sexiest single of the decade. It'd be perfect for both of their careers, the true Princesses of Pop would end the decade in the right way.
Telephone is wrong. Just because both of them are dominating the game right now, doesn't mean they should make a single together, it's just stupid. There's no sense in it whatsoever. If I were Beyonce I would've picked Rihanna, for example. They're both established R&B hit-makers who have been compared with each other several times. And I think the only fit for Lady GaGa is Katy Perry.
Lets not even compare Britney to Lady Gaga right now. Lady Gaga is owning her ass on so many levels right now that its quite embarassing so lets leave her out of this
^That was a dumb logic, sorry. Why would GaGa, or anyone, have an album randomly selling at $1 while everyone else didn't. That's actually not bringing in as much profit as people would be purchasing it from the fact that it's so cheap, while there other more expensive items would not sell. Such as singles, tours, etc.