She always lip-synchs everything except for the ballads when she just sits or doesn't move. The rest is not live singing, and it was totally obvious in this 'concert.' People defend her by saying it's hard to sing and dance at the same time, but plenty of other artists do it. And it's not like she's a great singer either. I guess you'll like this concert if you're a fan though.
Britney Spears Live from Las Vegas
(2001 TV Special)
Does she even turn her mic on?
14 February 2002