“Scream & Shout” is officially NUMBER ONE on iTunes!

From Britney twitter:

These past 24 hours have been just amazing… #BritneyArmy, thank u, thank u, thank u. I am one lucky girl to have u all in my life.

Her manager, Adam Leber also tweeted:

Major thanks to the fans all over the world for making #ScreamAndShout #1. Just told @britneyspears and she’s estatic