Gwyneth Paltrow left fans open-mouthed on Wednesday when she shared several throwback photos on Instagram.In honour of her longtime friend’s birthday, the Goop founder pulled together a montage of images of them as children, and her followers were quick to point out how much she looks like her own offspring in the snapshots. "OMG baby Apple was so much like baby Gwyneth," wrote one, referring to Gwyneth’s daughter, while another said her son Moses - now 14 - could have been "her