Federline's ex: You have to have sex to get pregnant

Kevin Federline's ex-girlfriend Shar Jackson has confirmed she is not pregnant with the rapper/dancer's fifth child - insisting she hasn't had sex for ages.

News sources went wild with reports at the beginning of the week, insisting the actress/singer was with child and her reps acted quick to deny the story.

Now Jackson herself has come out to blast the rumours, stating: "There's absolutely no action going on in my uterus."

She adds: "I got a call from a bunch of people. I was like: 'Wow, maybe I need to go and find out something about myself.' I'm no expert, but I hear you have to actually have sex… hasn't been happening."

Jackson insists she has a very good reason for not getting pregnant anytime soon: "I just got a tummy tuck a few months ago; I'm not trying to ruin my new body."