One of the most famous London hatters is James Lock & Co. of St James's Street. The shop claims to be the oldest operating hat shop in the world. Another was Sharp & Davis of 6 Fish Street Hill. In the late 20th century, museums credited London-based David Shilling with reinventing hats worldwide. Notable Belgian hat designers are Elvis Pompilio and Fabienne Delvigne (Royal warrant of appointment holder), whose hats are worn by European royals. Philip Treacy OBE is an award-winning Irish milliner whose hats have been commissioned by top designers and worn at royal weddings. In North America, the well-known cowboy-hat manufacturer Stetson made the headgear for the Royal Canadian Mounted Police and the Texas Rangers. John Cavanagh was one of the notable American hatters. Italian hat maker Borsalino has covered the heads of Hollywood stars and the world's rich and famous.