Kate Middleton apologises and admits editing Mother's Day photo

The photograph was shared with media on Sunday but it was withdrawn by international picture agencies later the same day because of concerns the image had been manipulated. Picture: The Prince and Princess of Wales/Instagram

Kate Middleton has apologised and admitted to editing a Mother's Day photo of her children and herself.

The image of Kate and her children, said by the Royal Family to have been taken by Britain's Prince William, was posted on social media.