This should definitely solve the dispute of whether Britney is or isn't lip syncing at her Las Vegas residency show. I present to you a video that should be irrefutable proof that the only singing Britney is doing these days is in the shower.
To be honest, no one goes to see Britney live because of her dashing vocals, but she could at least keep up the pretenses and hold the microphone to her face and mouth the words when they start playing out in the speakers.
Britney's performance had already been dealt some serious blows when it received mostly bad reviews when it first came out, but this should really but a dent in her Golden Armor.
With disappointing sales in her last album and mediocre reviews, it really looks like Britney has lost her touch of seducing fans and filling seats at venues. Granted, the competition nowadays is much fiercer than when she started out, but it feels like she's not even trying these days anymore.