Prince Harry at Lady Tamara Grosvenor wedding

Prince Harry (left) greets his grandparents, the Queen and the Duke of Edinburgh at the wedding of Lady Tamara Grosvenor to Edward van Cutsem at Chester Cathedral. Prince William will act as usher at the lavish service attended by 650 guests, including the Queen and the Duke of Edinburgh. The wedding brings together two of Britain's wealthiest families. Lady Tamara Grosvenor, 24, is the eldest daughter of the Duke of Westminster, Britain's richest man, whose land holdings, including swathes of Mayfair and Belgravia, give him a personal fortune estimated at 4 billion. (Photo by John Giles - PA Images/PA Images via Getty Images)