Golden Reign: Why Yellow Is the Unofficial Colour of Royal Summer Style

This season, one colour is rising above the rest—ushering in sunshine even when skies remain grey. From zesty lemon to the mellow tones of muted mustard, yellow has officially dethroned Barbie pink and Brat green as the undisputed colour of summer 2025. Radiating joy, sophistication, and quiet confidence, yellow is a palette that brims with possibility—and no one wears it better than royalty.

Few shades offer the cheerful charm and effortless energy of yellow. Whether worn as a statement gown, a tailored day dress, or a soft pastel suit, the colour instantly uplifts the wearer, embodying optimism, warmth, and poise.

For decades, European royals have embraced yellow for its regal yet contemporary appeal. From Diana, Princess of Wales, who frequently wore the hue on official tours, to Queen Maxima of the Netherlands, known for her bold and expressive wardrobe, yellow has long been a go-to for high-profile appearances.

Queen Elizabeth II made it a signature part of her vibrant wardrobe—donning the hue for Royal Ascot, Jubilee celebrations, and Easter services. Her canary yellow coat and matching hat at Harry and Meghan’s wedding in 2018 became an instant classic.

Today, that tradition is carried forward by Catherine, Princess of Wales, whose sartorial choices have positioned her as a global fashion icon. Whether dressed in a structured Roksanda dress at Wimbledon, a vintage-inspired Alessandra Rich for Trooping the Colour, or softer, butter-yellow tones at garden parties and royal visits, Kate Middleton makes a compelling case for yellow as a wardrobe essential.

Meanwhile, as Britain’s social set migrates south to sun-drenched European escapes—Ibiza for Poppy Delevingne and Prince Constantine-Alexios of Greece, and St Tropez for the Marchioness of Bath and Jade Holland Cooper—those staying behind in the UK are taking inspiration from Kate’s sunny staples, styling yellow with fresh flair, from countryside weddings to garden luncheons.

So, whether you’re holidaying on a Mediterranean coast or dressing up for an English summer fête, yellow is the royal-approved hue to bring light and elegance to even the cloudiest day. After all, when the skies won't shine, your wardrobe still can.