Courteney Cox is notoriously private about her personal life but delighted fans with a rare photo of her teenage daughter Coco over the weekend – and she looks so different!MORE: Why Courteney Cox won't leave Malibu homeThe Friends star took to Instagram to share a series of pictures to mark Easter, including one of her with Coco and boyfriend Johnny McDaid.In the image, the teenager looked stylish with purple hair and bold eyeliner as she posed alongside her famous mother. VIDEO: Inside