Holly Willoughby is back home in the UK after her recent holiday to Portugal, but reminisced on her sunny break as she shared a stunning throwback snap.This Morning star Holly looks incredible in the picture, in which she dons a ribbed white swimsuit with a plunging neckline and a bow detail.The 39 year old is sitting on the edge of the pool as she tops up her tan, but ensures to take care of her skin as she uses sunscreen.