Britney Spears dance thousand oaks rehearsal blonde singer
Britney Spears dance thousand oaks rehearsal blonde singer

Busting a move clearly puts her in a good mood!

Britney Spears is hard at work prepping for her Vegas residency, and the pop princess is logging a lot of hours at the dance studio in the process!

The "Toxic" singer is busy promoting her new album, and while she was recently overseas in London, the blonde bombshell decided to get in the Halloween spirit by making a viral video of her reading the famous Vincent Prince rap from Michael Jackson's "Thriller."

We love getting a glimpse of her silly side!