Britney Spears was caught lip-syncing again during her Vegas show. (Gasp! We’re so surprised! Wink!)
However this time was a little different. She supposedly wasn’t lip-syncing to her own vocals!!
While performing “Perfume,” instead of Britney’s track playing, it appears someone goofed and played Sia’s vocal track instead. (The song was originally co-written by Sia. She also sings the backing vocals on the track, as well as a duet version with Spears.)
Watch the clip here and tell us what you think!