Lisa Snowdon looked absolutely incredible in a tiny black bikini as she rang in her milestone 50th birthday in Iceland.The This Morning presenter is currently on holiday in the icy Nordic country with her fiance and partner of over five years, George Smart, after they spent the festive period as just the two of them. And the lovebirds continued their smitten display on Sunday as they enjoyed the likes of lagoon bathing, cold plunging and a steaming sauna at the geothermal spa Sky Lagoon for Lisa's 50th birthday.