Simon Cowell is a very proud father, and that was clear to see during his interview with Kelly Clarkson on Friday.The Britain's Got Talent judge was asked to show off an item from his home that makes him proud and the 60-year-old chose the sweet Father's Day letter he received from son Eric last weekend.MORE: Simon Cowell's son Eric gets first job aged sixA post shared by @simoncowell on WATCH Simon Cowell proudly read his Father's Day letter from Eric"Well, I would normally hold up a bottle of