OMG, Sia writing for Britney? Sia is awesome and her songs are amazing..... cant wait. Britney will be fine, she is not the best singer but she can put on a show no matter if she is not the old Britney. I am excited for new material, Blackout was fire and Circus was really good too... I wished more records from that album would have been released ( Manniquin/Kill the Lights/Lace & Leather/Trouble