Bettie Page-style wig, a multicoloured pleather bikini, and a pair of chunky heels.
The second photo shows her in a tight hyper-short black pleather shorts and the tattoo she got to match the one on her husband-to-be, Russell Brand.
According to The New York Daily News, the singer told EW.com that she bet against California Gurls hitting no. 1 and now must take the winner's kids to kiddie restaurant Chuck E. Cheese.
"I have six nights of Chuck E. Cheese planned. I’m excited! It’s going to be crazy!" she said.