Piers Morgan has delighted fans after sharing a sweet throwback photo of himself from his childhood.MORE: Piers Morgan thrills fans with rare selfie with daughterThe 55-year-old posted the adorable snap alongside a picture of himself as an adult as part of viral social media trend, "How it started, how it's going".The never-before-seen black and white image showed the Good Morning Britain host as a very young boy sat on top of a beer keg, while the second photo showed a grown-up Piers clutching