As if Britney Spears' "Circus" tour wasn't already raunchy enough, the pop princess is about to step it up big time on the UK leg of her tour. She's reportedly planing to hire naked acrobats, topless burlesque performers and dancing dwarves to perform after each of her eight shows.

A source says:

"It's going to be crazy. Britney wanted to throw parties people will be talking about for years. I promise you, you've never seen anything so explicit in your life."

Britney will be performing eight shows in London between June 3 and 14, before moving on to Manchester, Ireland and France.

Her US shows were definitely R-Rated, but in Europe, anything goes and Britney is gonna go there.