Princess Diana's pearls and pie-crust collars were largely replaced with sharp-shouldered blazers and cocktail dresses in the Nineties. And it's this decade which will provide the setting of the first half of season six of The Crown. Elizabeth Debicki is returning as Princess Diana, who starts the new series on holiday in St Tropez - and the promo shots that have already dropped ahead of tomorrow's release would suggest that the show's costume designer duo, Amy Roberts and Sidonie Roberts, have taken a forensic approach to recreating certain outfits that will no doubt be remembered by many royal fans. As to how the on-screen looks - of Diana's, as well as Prince Charles, William, Harry and the Queen - compare to real life, keep scrolling to see the outfits that have been referenced in the next series below.
SEE: The Real-Life Outfits Of The Royals In Season 6 Of The Crown
The Red Shift
This Catherine Walker shift dress, complete with a double-buckle waist belt, was masterfully recreated for this series of The Crown. (And they even managed to imitate her curved gold clip-ons to perfection.)
Scottish Smart Casual
Prince Charles (as he was then) with his sons, William and Harry, who spent part of their summer holiday at Balmoral. As you can see, The Crown's version is a very near match. Apart from the colours of the kilt and sporran, it's like playing a game of spot the difference.
The Leopard-Spotted Swimsuit
This Gottex swimsuit has actually been re-released by the brand who made the original back in the '90s - and is available to buy in a limited run of 250 cosies.
The Queen's Mourning Dress
Princess Diana's funeral features in the first half of this series, for which the costume designers reimagined this rather sombre dress coat worn with a respectfully unshowy string of pearls for the Queen.
In the last series of The Crown, Debicki's outfits were also copied-and-pasted from the wardrobe of Diana (with yet another recreation of a dress designed by Catherine Walker).
SEE: The Real-Life Outfits Of Princess Diana in Season 5 Of The Crown
The Blue Dress
The plunging silhouette, the beaded surface; this dress looks very similar to one she wore in 1995. Its designer was Catherine Walker, a favourite of Princess Diana, and the colour is very similar to the ice blue gown she famously wore to the Cannes Film Festival.
Serpentine Gallery, 1995
The Swimsuit
Could this cossie be based on the leopard-spotted suit she wore in Necker Island?
Necker Island, 1995
The Floral Dress
The print isn't exactly the same, but the padded shoulders and power earrings would suggest that this outfit is a rendition of the below look that she wore for a visit to Seville.
Seville, 1992
And what about season four?
SEE: The Real-Life Outfits Of Princess Diana In Season 4 Of The Crown
The Crown Princess Diana Style
Everything about this look is perfect, from the detailing on the hat to the bow-tied belt.
The Crown Princess Diana Style
Diana loved bold colours, like this striped red suit and coordinating hat.
The Crown Princess Diana Style
We'd like to imagine that after posing for pictures this day at Highgrove, Princess Diana then rollerbladed around the palace.
The Crown Princess Diana Style
Not many people could pull off a bold houndstooth suit, but Diana – and Emma – certainly can.
The Crown Princess Diana Style
If only the dancing girl emoji was wearing a blue dress...
The Crown Princess Diana Style
The royals love their tartan, don't they?
The Crown Princess Diana Style
Princess Diana was no novice when it came to red carpet dressing, as seen here in this gorgeous silver dress for a premiere in Leicester Square.
The Crown Princess Diana Style
For casual weekends in the country with Prince Charles, Diana loved a printed jumper.
The Crown Princess Diana Style
For her engagement announcement to Prince Charles, Diana wore a deep blue dress – which many compare to the dress Kate Middleton, which was from Issa, wore for her engagement announcement to Prince William – with a white-and-blue patterned scarf. The Crown's costume department got it spot on.
The Crown Princess Diana Style
We couldn't be more obsessed with this look if we tried: a young Lady Diana Spencer, wearing yellow dungarees, attends a polo match in July 1981.
The Crown Princess Diana Style
It's one of the most famous dresses in the world, and we think this version is almost as beautiful as the original.
The Crown Princess Diana Style
Princess Diana loved a floral print, but we think this one-sleeved look from looks most similar to the dress she wore to the premiere of When The Whales Came.
The Crown Princess Diana Style
In June 1981, Princess Diana wore a stunning red Bellville Sassoon dress to the premiere of the Bond film For Your Eyes Only, which looks like the inspiration for this look from The Crown.
The Crown Princess Diana Style
Princess Diana, in a statement lace collar and green-and-white polka dot dress, sits with a young Prince William on a royal tour of New Zealand.