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 Meghan Markle and Prince Harry's upcoming May 19 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 a "uniform, morning coat, or lounge suit," and for female guests to sport a "day dress with hat." So, with less than two weeks until the big day, perhaps you can garner some potential royal wedding outfit inspo from these previously worn looks, featuring appearances from Victoria Beckham to Nancy Reagan.