Kate Middleton & Queen Letizia Just Had Their Best Matching Style Moment Yet

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Royals have had their fair share of matching style moments, but rarely have these nearly identical looks debuted at the same event — until Mon. that is. On June 17, Kate Middleton and Queen Letizia showed up to the annual Garter Day procession in outfits that were subtle variations of each other. Though it's unclear whether or not they planned to coordinate for the event (hint: probably not), one thing's for certain: Both royal ladies looked as stunning as ever in their black-and-white ensembles that made a strong case for the classic color combo.

Middleton and Queen Letizia have had a whirlwind past few weeks. And with a lot of events popping up on their royal calendars, you can rest assured that plenty of stunning outfits ideas are sure to follow. Though each has been busy attending to her own duties — Middleton in London and Letizia in Spain — the two reunited at St George's Chapel in Windsor on Mon. for The Order of the Garter, a service that recognizes the achievements of "Knights, now both male and female... chosen from a variety of backgrounds, in recognition for their public service," according to the royal family's website.

The Garter Day procession is one of the most traditional events on Queen Elizabeth's calendar, so it should come as no surprise that the attendees also took a more formal route with their attire. Both Middleton and Letizia opted for a classic color combo of black and white, with the duchess turning to her favorite designer Catherine Walker and Letizia sporting Spanish-based brand Cherubina.

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Middleton stunned in a white coat dress from the London-based designer, which featured dainty black trimming along the collar and hemline. The duchess has been stepping outside of her usual footwear wheelhouse as of late, opting for bolder styles in lieu of her classic neutral pumps — and Mon.'s outing proved her unique shoe streak isn't over just yet.

Middleton grounded her ensemble with a pair of black Prada pumps (complete with cutout detailing at the vamps and tonal stitching throughout). She accessorized the outfit with pearl drop earrings and a sleek black clutch, topping it all off (quite literally) with a wicker-like Lock & Co. hat.

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Letizia wore what's easily one of her most trend-forward looks of the month. Her mid-length frock — which was covered in a print unique to Cherubina — is designed with puff sleeves, buttoned cuffs, and a turtleneck collar.

As for her accessories? Much like Middleton, Letizia reached for a pair of can't-miss earrings that were on full display, thanks to her refined updo, a hat with a netted front, and sophisticated black pumps that pulled together everything with ease.

Only time will tell when these royals will attend another outing together — and whether they will (accidentally) coordinate again. Here's to hoping they will.