Britney Spears lip-syncing is not what you'd call a rare event. Here's another example from 2014.
Rating: 5.0 / 5.0
Anna Kendrick and John Krasinski go head to head in an epic edition of Spike's new show Lip Sync Battle.
Rating: 5.0 / 5.0
John Krasinski and Jimmy Fallon lip-sync to various pop hits. Pretty great.
Rating: 4.3 / 5.0
Jimmy Fallon and Paul Rudd compete in a lip-sync off. And it's pretty epic.
Rating: 4.0 / 5.0
Katy Perry lip-syncing at the NRJ Music Awards ... check it out!
Rating: 3.6 / 5.0
Iggy caught lip syncing. Note how she doesn't even try to hide it.
Rating: 2.7 / 5.0
Another classic Britney Spears lip sync video. Watch that headset come loose, and yet nothing changes.
Rating: 2.5 / 5.0
Anna Kendrick and John Krasinski bring their lip sync battle to an epic conclusion. How does Krasinski's take on Tina Turner's classic version of Proud Mary stand next to Anna's take on Jennifer Lopez's Booty?
Rating: Unrated