Posh: 'I shag all day to stay slim'

Victoria Beckham has revealed that she stays slim by having sex with husband David.

The Spice Girl dismissed speculation that she maintains her trim physique by refusing to eat, saying she prefers to burn calories in the bedroom.

She told OK!: "Some women ask if I'm so thin because I shag all day.

"And I say, 'Actually, yes! And I bet you would too if you were married to David Beckham'."

It was recently reported that David is "wild with jealousy" over his wife's flirtatious behaviour.