Piaget, the Geneva watch and jewellery house celebrates the royal wedding by offering the chance to win a Piaget £9,000 watch to those who order at glass of Louis Roederer champagne at Marylebone's Café Luc this weekend (27-30 April). Along with your coupe of Louis Roederer champagne (£12.80) at at the chic Café Luc you will be presented with jewellery box containing bar code. Head off to the Piaget Mayfair store (169 Bond Street) before the 6th April to see if you have won the first prize of a £9,000 watch or second prize, a white gold and diamond pendant worth £3,250. A fine excuse for a patriotic tipple over the long weekend.