Christina Aguilera Tweeted Britney a nice message about the Femme Fatale release, saying:
Hey @BritneySpears Congrats on Femme Fatale release! Can't wait to see what you bring in the next video. xo - Xtina
Britney responded with a Tweet of her own.
Thanks @TheRealXtina. Can't wait to watch you on your new show. Hope we get to hear that voice on The Voice.