British glamour model and reality TV star Nicola McLean has claimed she did not realise she was four-weeks pregnant while enjoying a boozy night out on the town with Natasha Giggs.

The mother-of-two revealed to OK Magazine that she would never take alcohol if she knew she was carrying a baby but admitted she thought a long battle with eating disorders had left her unable to conceive.

The star, who was snapped alongside Giggs on the night in question wearing leather trousers, a brown sleeveless top and earrings, said she was looking forward to the new arrival.

She told the publication: “I wasn’t being irresponsible. I didn’t know I was pregnant – now I do, there’s no way I’ll drink.

“Because of how ill I’ve been with my eating disorder, my periods had stopped and I thought I’d blown my chance of having anymore kids.”

The 30-year-old was recently placed seventh in the latest Celebrity Big Brother, which aired on Channel 5 in January.

27-03-12 1 Nicola McLean denies knowledge she was pregnant after boozy night out