Ananova:

Stella McCartney is expecting her first child with husband Alasdhair Willis.

She announced the happy news at her Paris fashion show and admitted she did not want to know the sex of the child until it was born, saying: "I want it to be a natural thing. I want the surprise."

The baby will be Sir Paul's third grandchild - his daughter Mary has two young sons reports Femalefirst.co.uk.

Stella wed publisher Alasdhair last year in a ceremony conducted at her late mother Linda McCartney's favourite place, the Scottish Isle of Bute.

The star studded guest list included star couple Gwyneth Paltrow and Chris Martin, Madonna and husband Guy Ritchie, actress Liv Tyler and supermodel Kate Moss.