Queen of casual: All the super-chic outfits you forgot Princess Diana wore back in the day

As you're about to see, some of Diana's greatest low-key fashion moments occurred on the greens at the polo. This dungarees floral ensemble is just the beginning...

On a sunny day in 1983, the Princess of Wales made all our fashion dreams come true at once - we are obsessed with this glorious high-waisted wide-legged white shirt extravaganza.

Yep, everything about this outfit practically screams chic.

That same year, Lady Di opted for a quirky sheep-clad red knit as she casually yarned with in-law Sarah Ferguson.

And once we got over how cute Prince William was during this photo call at Kensington Palace, we couldn't take our eyes off this chic red-boot-and-cream-knit combo. Mixing textures like a pro!

Queen of casual, Queen of chic... and Queen of knits indeed. We're big fans of this chunky white cardi, which the Princess slung over a bright pink linen dress in 1984.

Back at the polo in 1985, Diana's baby blue floaty design was perfect for a day in the sun.

Continuing her perfect polo streak, the Princess went full-blown monochrome chic in 1986 - the sunnies were the cherry on top of a very stylish pie.

Oh, and can we talk about this polka-dot pants and boots combo?!

In 1987, Diana went back to her old trusty style, wearing denim dungarees as she and a young William watched Prince Charles play polo.

Proving she can literally do no wrong, the People's Princess decided to add a feminine twist to her ensemble during a 1988 visit to the Royal Hampshire Regiment.

In 1988, Diana made cow-girl-gone-college chic a thing. If anyone could do it, she could.

That same year, the Princess rocked some major colour in this bright floral dress - love the simple gold jewellery, too.

So we've definitely seen this heavenly Catherine Walker number on Diana before, but we just haven't seen it enough - hence why it's here once again for your viewing pleasure.

A style slam dunk if we ever saw one.

In 1989, Diana made the school drop off look runway-worthy in this stripy cardi and pleated midi skirt.

Channeling a bit of 60s chic, this butter cup yellow Escada coat is iconic on Di, and Di alone.

During a 1990 Caribbean holiday, the Princess rocked full leopard print in this beach swim dress of dreams.

Royals wear board shorts too! That same year, the Princess embraced holiday chic like no other during a trip to Majorca.

And in a sign of things to come, Diana kicked off the 90s with one of the decade's biggest trends - an oversized jacket.

In 1991, Diana visited London's West End in a one-shoulder creation that can only be described as heavenly.

Back to her casual-cool ensembles, Diana knew how to nail the cable knit and denim combo.

On a glitzy engagement in Leicester Square, the Princess' mint-green off-shoulder gown made the style statement we never knew we needed.

While shopping in Knightsbridge in 1994, Diana made the off-duty blazer and skinny jeans combo a thing, before it was even a thing.

And we will be copying this look immediately.

Known for her iconic work-out style, Diana's bike-shorts and oversized jumpers will go down in history as a forever mood.

Just casually flinging a midi-length coat over gym gear is something only Diana could truly pull off.

Of course, Diana nailed her cruise fashion and this electric cover-up paired with a red beach bag is as bright as her iconic personality.

Diana wore this look during a trip to West Berlin, and the tracksuit is something any arty indie kid in Berlin would wear today.

This outfit is all about the details as the baby blue dress features floral embroidery, and Diana has styled it with a pearl necklace, bracelet and earrings.

Diana opened the Women's International Tennis Association European Office in 1988, and her tennis dress and cardigan were a cute pastel choice.

This look was born so Gen Z's could run! This ultra-fashionable look was worn by Diana back in 80s.

This charmingly preppy look enamours us, and we are especially drawn to those Chanelesque shoes.

Diana wore this bright red puffer jacket on a skiing holiday in Austria, and it's the perfect edit on a trend that usually sticks to neutral colours like black, white or grey.

This linen outfit that is the colour of the sun, was a perfect choice for Diana's time in Cairo, Egypt. If only one could book a flight to Egypt to replicate this ultra laid back but Casablanca movie-inspired outfit.

Diana was matching her bag to her skirt and her sweater to her flowers at the polo.

Diana's affinity for the colour red is best encapsulated by this oversized red coat styled with a red hat. For those with a knack for detail, Diana's purse features a red seam.