ET's Kevin Frazier roamed the party all night and caught up with one of Britney's old friends, Lance Bass, who said the bash marked a turning point for the pop princess and predicted she still has an "amazing" career ahead of her.
Keep checking back here for all of ET's exclusive Britney coverage!

Which of Britney's videos off of her new album "Circus" do you prefer?
Womanizer
Circus

