Lorraine Kelly is set to take on her biggest role yet as the ITV superstar announced that she is about to become a grandmother for the first time as daughter Rosie Smith, 29 is expecting her first child.Taking to social media on Friday, producer and writer Rosie posted a mirror selfie showing off her blossoming bump captioned 'we could not be more excited- you're already so loved little one'. In a second snap, she shared her 12-week scan in which she revealed her little one was 'the size of a fig'.