Prince George stole the show as four generations of the Royal family posed for a portrait ahead of Queen Elizabeth's 90th birthday. The adorable toddler gave a cheeky grin as he held onto his dad. He posed alongside Prince Charles, Prince William and the Queen in the White Drawing Room at Buckingham Palace. Their photos will appear on stamps being released to honor the Queen's birthday. He said George was "very comfortable" during the shoot. #InsideEdition