Our Yorkshire Farm's Amanda Owen has shared a photo of her eldest son towering over her.The Channel 5 star took to her Instagram page to share the selfies of her and Reuben, 19, showing just how much he's grown, as they took a break from working on the farm.The mother of nine often updates her 441k followers on her life on Ravenseat Farm through her social media pages, and posted a heartwarming tribute to her son, who was born ten weeks prematurely.