But if you're Hollywood royalty, taking a leaf out of Meghan Markle's fashion book is a little more attainable.
Case in point, Angelina Jolie's Ralph & Russo look last night.
While attending the Service of Commemoration and Dedication of the Most Distinguished Order of St. Michael and St. George in London, Jolie wore a pale grey, custom Ralph & Russo dress with a cowl neck, matching gloves and a matching fascinator.
Of course, Ralph & Russo were widely considered frontrunners to design Meghan Markle's wedding dress after the bride wore the British label during her engagement photo shoot.
Though Meghan and Harry weren't at the event, Jolie was joined by His Royal Highness The Duke of Kent, Grand Master of the Order.
Here's hoping for a Jolie-Markle photo opp in the near future.