As one would expect, the stakes are high when it comes to mapping out a royal wedding guest outfit that would garner even Queen Elizabeth II's stamp of approval. Naturally, any old sundress from the back of your closet simply won't do, and A-list guests over the years have pulled out all the stops for their royal wedding day looks. From elaborate fascinators to bold (knee-length!) dresses and overcoats, guest apparel certainly proves that weddings of royal proportions ain't your standard nuptials (as if we didn't already know that...).
In honor of Princess Eugenie and Jack Brooksbank's October 12 royal wedding, we took a look at some of the best dressed guests of royal weddings past from around the world. The soon-to-be-married pair's dress code calls for men to wear morning coats, and for female guests to sport a day dress and hat. So, with just a few short days (!!!!) until Eugenie and Brooksbank walk down the aisle, perhaps you can garner some potential royal wedding outfit inspo from these previously worn looks, featuring appearances from Victoria Beckham to Nancy Reagan.