Simon Cowell is a proud and doting father to his six year old son Eric and he has now revealed the adorable Father's Day letter that the youngster wrote him. Simon, 60, shared the heartwarming contents of the letter that Eric wrote to him with his America's Got Talent colleagues and Kelly Clarkson while appearing on the singer’s show via a Zoom call.The X Factor judge produced the letter after he was asked to show off an item from his home that makes him proud.