Geri Horner returned to Instagram on Sunday evening with a new photo of her son, which showed the little boy wearing a huge cuddly panda head that he held onto with both hands.The former Spice Girl didn't explain her three-year-old's choice of headwear, but she did caption the cute picture: "Monty’s game face."Her fans were quick to share their love for the sweet snap, with one commenting: "Oh, how cute.