Nothing says, "it's fall!" like breaking out the plaid from the back of your closet. And who wears it better than the royal family? From Queen Elizabeth's custom skirts to Princess Diana's bold 80s looks and Duchess Kate's refined take on tartan, here are some of their best looks over the years.
A plaid skirt, jacket and head scarf is Queen Elizabeth II's go-to casual outfit. Here she is in 1973 with her husband Prince Philip at the Badminton Horse Trials.
Queen Elizabeth typically matches the plaid on her skirt to the collar on her jacket, because why not?
While she's all for coordinating jacket-skirt combos, the Queen isn't afraid to do a little bit of power clashing with her head-scarf choices.
She also isn't afraid to go plaid-to-plaid with her husband at official events.
The royal family even has their own Balmoral tartan, which was designed by Queen Victoria's husband in 1853. The gray, red, and black plaid can only be worn by the Queen and her personal piper, plus a few other members of the royal family (if the Queen gives her permission first!).
Princes Charles has been wearing Balmoral tartan since he was a little boy.
Looks like Camilla gets to wear the special tartan, too.
Will and Kate also have their own tartan. Since their Scottish titles are the Earl and Countess of Strathearn, Kate has accessorized several outfits with this yellow and red Strathearn tartan scarf.
But nobody wore plaid better than Princess Diana.
While most royals stuck to the traditional tartans, Diana rocked plaid in every color imaginable in true 80s style.
…and this fabulous bright yellow Escada number.
Even when Princess Diana wore more subdued colors, she still went big. Case in point: This matching Catherine Walker hat-and-dress combo she wore to the Braemar Games in Scotland in 1989.
Here's another tartan gem by Catherine Walker from 1990.
Di could even pull off plaid as formal wear.
From a young age, Prince William knew that a plaid umbrella was the perfect accessory for a pair of Wellies and a Barbour jacket.
However, Prince Harry doesn't seem to be as big of a fan of plaid as the rest of his relatives.
Though this bearded snapshot of his dad in 1976 gives us a pretty good idea of what Harry could look like in head-to-toe plaid.
Kate Middleton also loves bundling up in plaid once the weather cools off.
She's worn this classic Black Watch tartan coat a number of places, including a visit to her prep school to Christmas services with her in-laws.
The Duchess is so chic she can make plaid a neutral.
Though she probably got that fashion tip from the Queen herself.