Madonna’s sex drive inspired her new album.

The superstar singer, who releases her latest LP ‘Hard Candy’ this month, loved teaming up with producer Pharrell Williams to write steamy track ‘Candy Shop’.

She said: “‘Candy Shop’ was the first song I wrote with Pharrell. It is one of my favourites on the record. It personifies the mood I was in while making the record - lots of innuendo. You can get so many things in a candy shop!”

Meanwhile, Madonna - who is married to British film director Guy Ritchie - has also revealed she found it a challenge working with Justin Timberlake and super producer Timbaland on her new single ‘4 Minutes’.

The 49-year-old star said: “I’ve never been double teamed before in the studio, that’s just to start off with that. I usually only collaborate with one person at a time and there usually is only one sort of person that I have to volley with.

“So to be suddenly in the studio with two very big personalities who have very strong opinions it was a challenge, it was different, it was new.”

Madonna’s ‘4 Minutes’ topped the UK singles charts yesterday (20.04.08) - securing her 13th UK number one song.

Madonna recently told a Phoenix radio station that her husband, Guy Richie, went on the Cookie Diet, and once he started popping the low-cal, meal-replacing cookies, their sex life suffered. “My husband went on that Cookie Diet and it was such a turn-off because he didn’t want to have sex,” she said.

The creator of the diet, Dr. Sanford Siegel, wants to make clear that Richie’s side effect had nothing to do with his cookies. “My cookies taste good enough but I can’t imagine someone preferring them to sex,” Siegel said.

Richie isn’t the first celeb to try the diet, which has been around since 1975. Mandy Moore, Kelly Clarkson and Jennifer Hudson have all reportedly given it a shot, and Howard Stern keeps bags of them on his desk.