Australian pop star Peter Andre was startled when a pregnant fan went into labour while he was chatting to her at a signing.

The Mysterious Girl hitmaker was in Bury St Edmunds, England on Saturday (26Jul14) to promote his new women's fragrances, Forever and Forever Young.

He was talking to a fan while signing a perfume bottle when she suddenly went into labour.

Andre wrote on, "So yesterday I was signing bottles of my perfume and as I was talking to this lady, she went into labour ... she now has a beaut (beautiful) baby. Wow... So my perfume can officially put you in labour."

The singer urged the fan to come forward, and the new mum, named Claire Reynolds, shared a picture of her son and told Andre, "meet baby harry (who) went into labour at ur (sic) perfume signing 2day (sic) in Bury."