Music
WENN
The singer received a positive response on the opening night of her first live tour in five years but was criticised for miming the majority of the 90-minute set.
According to The Sun, Spears performed her number one single 'Everytime' with a pre-recorded vocal track turned down.
However, celebrity blogger Perez Hilton complained: "She lipsynchs during the entire concert. There is no live singing."
The star kicked off 'The Circus: Starring Britney Spears' tour in New Orleans on March 3. She will play a mini-residency at London's O2 arena starting June 3 and a one-off show in Manchester on June 17.
> Click here to see photos from Britney's tour
More: Britney Spears, Music
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