Are you gripped by Royal Wedding fever yet? If the answer is a big fat 'yes', you'll want to head over to the app store and secure the Official Royal Wedding app right now. That's if you own an iPhone or an Android device, obviously.According to Pocket Lint, the officially-sanctioned app, courtesy of the Royal Collection, gives you the rundown on major royal weddings of the past - seven royal nuptials from Queen Victoria and Prince Albert in 1840, to the Prince of Wales and the Duchess of Cornwall in 2005.'Apps enable us to place works from the Royal Collection in the hands of a worldwide audience. It is fitting and exciting that the first Royal Collection App will share the stories of past royal weddings and offer a wealth of historical context for the ceremony on 29 April,' said Jemima Rellie, director of publishing and new media for the Royal Collection.Available in eight languages and priced at £1.79 for iOS and Android devices from 18th April, it's packed with royal rarities, including the sapphire and diamond brooch given to Queen Victoria by Prince Albert on the day of their wedding, a watercolour sketch by Queen Victoria of her bridesmaids’ dresses, a sketch of Queen Victoria’s wedding cake and images of the Queen’s wedding dress, designed by Norman Hartnell.Many other apps will hit the market soon, but you suspect none will be as classy as this one. If it's your thing, grab it now.