Hopefully gaga will get number 1!

GaGa > Rihanna > Sugababes > Timbaland.

Hopefully Gaga wins and Sugababes finish last

gaga then sugababes then rhianna then timberland

I think Rihanna will easily be #1. I could see all four having top 5 debuts though, maybe not GaGa because it's a re-release but it does have a lot of new songs on it and she has a huge fanbase. I also wouldn't be surprised if Sugababes only made top 10, mainly because a lot of people are still not pleased with Keisha's removal.