Keira Knightley's male assistant discovered the perks of having a sexy actress as his boss as the Brit prepared to play one-time stripper DOMINO HARVEY in DOMINO - she practiced lap dancing on him.

The Pirates Of The Caribbean beauty had never even been inside a stripclub before signing up to play the socialite bounty hunter and insisted on getting all her sexy moves down perfectly by working on her sidekick DEREK.

She reveals, "I actually had lap-dancing lessons for the movie. I had to co-ordinate with my bum double, figuring out if I moved the top half of my body what would happen to the bottom half of hers.

"I practiced on my lovely assistant Derek."