With Spanish royals King Felipe and Queen Letizia arriving in London for their first state visit to Britain, there's no better time to shine a spotlight upon Letizia's impeccable royal style. Always occasion-appropriate yet perhaps - whisper it - less sartorially risk averse than many of her royal equivalents elsewhere, the Queen, a former journalist who married Felipe in 2004, has earned comparisons with Kate Middleton for her seamless ability to mix and match high street labels with more directional styles straight off the catwalk.
Much as Kate plays a part in boosting the British fashion industry, Letizia is the consummate ambassador for Spanish brands on the world stage, favouring local designers like Felipe Varela and up-and-coming label Cortana (best known for their fluid lines and colour-block styles) for formal events. When off-duty, she often opts for Mango, Zara and Uterque ensembles.
These habits to mix high street with high end and spotlight homegrown designers aren't the only style signatures that the Queen and the Duchess share. So, what can we learn about royal dressing by comparing some of Kate and Letizia's most memorable fashion moments?
1. A study in scarlet
It's no surprise that former news anchor Letizia (journalist to Queen is certainly a career trajectory we can get on board with) knows the power of a statement suit. Just like Kate, who has recycled her Luisa Spagnoli ensemble for numerous public occasions, she often favours a bold red colour block, in this case teamed with accessories in a similar hue.
2. Statement stripes
It's well-documented that classic Breton tops are a mainstay of Kate Middleton's off-duty style. More recently, she's ever-so-slightly shaken up her favourite look by playing with a different (and fittingly patriotic) colour combination of red, white and blue, teamed with her go-to Superga trainers. Letizia, meanwhile, nails the smart-casual formula in this striped pencil skirt from go-to label Hugo Boss, teamed with a perfectly cut silk tee from Spanish designer Adolfo Dominguez.
3. Giving the cold shoulder
It can't always be easy to walk the tightrope of royal dressing, balancing the demands of protocol with a natural imperative to nod to the latest trends. The cold shoulder neckline, however, allows Letizia and Kate to tick off both those considerations for formal occasions: Kate's fit-and-flare Barbara Casasola gown is one of the Duchess's most fashion-forward choices yet, while Letizia stuck to a monochrome theme in a similar style at a recent engagement. She's also made the trend work for day time, recently teaming a simple off-the-shoulder blouse with wide-leg trousers.
4. Red carpet dressing, royal style
The Spanish Queen's asymmetric Stella McCartney gown wouldn't look out of place on the Oscars red carpet: in fact, model Karlie Kloss actually wore the same style in white to this year's Academy Awards. Kate, meanwhile, sported a similar shade during last year's Canadian tour, and loves this Preen design so much she owns it in black, too.
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5. Embellished eveningwear
From Park Avenue princess to Queen of Spain: we can't be the only ones to spot the major Blair Waldorf references in Letizia's show-stupping blush gown with subtle floral embellishments, as worn for the wedding of Crown Princess Victoria of Sweden. Her fairytale ensemble is a near relation of one of Kate Middleton's favourites: this pearlescent Jenny Packham style, decked out in Swarovski crystals, which the Duchess has re-worn for a handful of charity galas (if we had this hanging in our wardrobes, we'd recycle it, too...)
6. Elevated workwear
Both Kate and Letizia are frequently photographed in smart shift dresses (Reiss and Temperley for the former; Hugo Boss and Carolina Herrera for the latter) for public visits. That's not to say, though, that they shy away from separates, often opting to team a simple white blouse in a luxe fabric with a more dramatic A-line skirt (see Kate's graphic patterned number). Workwear inspiration, anyone?
7. All white everything
An all white outfit is surely the ultimate sartorial status symbol: nothing subtly whispers 'I don't take public transport' like dressing head to toe in the least practical of colours. The Duchess's belted Alexander McQueen skirt suit is a summer favourite, while Letizia's similarly flared combo is a winner in our eyes. Plus, her choice of nude slingbacks? Very K-Mid.