If there's a material the royal family love to wear, it's tartan; from kilts to scarves to hats to dresses (Princess Diana's favourite), the royals have long been associated with sporting a slither of tartan patterned wool.
They even have their own Balmoral tartan, designed by Prince Albert in 1853, and many of the royals have their own too including the Queen - the Royal Stewart is the Queen's personal tartan.
But when they're not wearing designs by Queen Victoria's husband, they're wearing everything from traditional checks to more avant-garde plaids; scroll through our gallery to see the best tartan looks from the royals.
The Duchess of Cambridge and Princess Charlotte
For the Queen's annual Christmas lunch at Buckingham Palace in December 2019, Kate and her daughter Charlotte adorably matched in tartan. The Duchess rocked a truly festive look in red; she was thought to be wearing a bespoke version of a £1,920 Emilia Wickstead dress.
The 'Anni' chiffon-crepe midi dress features a white collar, a pleated skirt and a belt. Charlotte, meanwhile, matched mum in a navy and burgundy tartan dress with a Peter Pan collar. The little girl's 'Nutcracker Dress' by Little Alice London, which costs £68, features a velvet collar, mother of pearl buttons and a sash tie.
WATCH: Prince William and Kate's surprise appearance to mark Burns Night 2021
The Duchess of Cambridge finally gave us a full glimpse of her tartan Emilia Wickstead dress in January 2021, first worn to the Queen's Christmas lunch in 2019.
Kate donned the apt look as she and Prince William delivered a video message to staff at Ninewells Hospital in Dundee to mark Burns Night, a day which celebrates the life and poetry of Scotland's national bard, Robert Burns.
The Duchess accessorised her red tartan dress with a pair of Simone Rocha pearl earrings.
The Duchess of Cornwall
Never one to shy away from a bold, bright hue, we love Camilla's take on a tartan in royal blue. Check out those velvet pockets too!
Keep clicking for more photos...
The Duchess of Cambridge
Talk about Christmas outfit goals. Kate's red tartan midi was a winner when she stepped out in the Emilia Wickstead skirt, paired effortlessly with a black cardigan and knee high suede boots at a children's party in 2018.
Is this the cutest use of tartan from a young Prince William? We think so!
The Duchess of Sussex
Meghan's plaid Karen Walker trench coat is timeless tailoring at its finest; she packed the jacket for her royal tour to New Zealand in 2018, belting it neatly just above her baby bump.
HRH Queen Elizabeth II loves, loves, loves a tartan, and a kilt has long been her go-to for more casual events throughout the years.
Charlotte has a bit of a reputation for being one of the most achingly cool royals, and this Gucci dress proves why. It's a little bit traditional and a little bit rock and roll – and we love it.
The Countess of Wessex
If head-to-toe tartan is a print too far for you, follow Sophie, the Countess of Wessex's lead and opt for a simple scarf to jazz up a neutral-shaded outfit.
Duchess of York
Twinning is winning, especially when you're brave enough to do it with your husband! Back in the day, Sarah, the Duchess of York and then-husband Andrew, the Duke of York, thought nothing of wearing matching kilts to an event in Inverness. We're so here for it.
Their daughter, Princess Beatrice, makes a good case for a tartan dress too – she looked adorable in the plaid frock in 1990 as she made her way to meet her baby sister, Princess Eugenie, for the first time.
Here's Princess Diana back in 1981 at the Braemar Highland Games wearing one of our fave pieces of hers – a tartan two-piece, topped with a black hat and matching belt.
The Duchess of Cambridge
Kate looked great when she visited Dundee in 2019 wearing one of her favourite coat dresses by Alexander McQueen. The Duchess teamed the recycled frock with a pair of black tights, a green micro bag and a pair of wooly gloves.
Mixing up checks and tartan like a pro is Queen Maxima, who wore the chic ensemble at a 2018 event in The Hague; she coordinated perfectly with tan accessories.
Princess Deena Aljuhani Abdulaziz
Before we wax lyrical too much about Princess Deena's ridiculously chic outfit, can we take a moment to appreciate the simplicity of her accessories? Those slim, minimal heels pull her whole Acne look together - we'd like the whole thing in our size, please. This is tartan with a twist and we're obsessed with it.