And there's more. Lady GaGa - real name Stefani Germanotta - has been writing songs for the new Pussycat Dolls and Britney albums and recorded a track called 'Big Girl Now' with New Kids On The Block. In all likelihood we're going to be hearing quite a bit from her over the next 12 months or so.
'Just Dance' doesn't have a UK release date yet, but there's nothing to stop us from watching the video now, is there? It's stylish, sexy and very trendy-looking... up until the moment where Lady GaGa decides she'd quite like to hump an inflatable whale. You know, even Madonna never did that.
What do you think of 'Just Dance'? Will it be a hit in the UK? Use the space below to have your say.