Piers Morgan shared a special message on Instagram this week, as he celebrated his younger brother's birthday. The Good Morning Britain star posted a snapshot showing the siblings together in 2005 at the Oval, with the pair wrapping their arms around each other’s shoulders.MORE: GMB's Piers Morgan looks unrecognisable in never-before-seen childhood photoPiers, 55, wrote: "Happy Birthday to my little bro @rpmorgan14, my partner-in-crime at many a sporting event.