Simpson admits she's studied the Pussy Cat Dolls and implemented some of their moves behind closed doors for the lucky men in her life.

"I love the way they dance," she said.

"I do some of the moves myself but not in public - I keep that for the bedroom."

She added: "I love watching them. I take notes and then keep them for those private moments."

Meanwhile, Jessica Simpson is set to star in 'Major Movie Star.' .

In the film, Simpson will portray a pampered star, who decides to enlist in the Marines in order to win favors of filmmakers who consider her unsuitable for their upcoming military-themed flick.

After the lady arrives at Camp Pendleton, she realizes that she has made a huge mistake.