Who? Kate Duchess of Cambridge, Camilla Duchess of Cornwall and Sophie Countess of Wessex
Where? At the annual service for The Order of the Garter, at Windsor Castle
What? Now we can't work out if this was an accident, careful colour co-ordination, or whether this particular event calls for a very strict dress code - but Kate, Camilla and Sophie were snapped our this afternoon looking almost identical in matching white.
While Duchess Kate teamed her flared Alexander McQueen coat dress with her favourite nude heels, a cream circular fascinator and Kiki McDonough earrings (the same pair she wore on Christmas Day), Sophie opted for a cropped blush pink textured jacket and nude floral headpiece.
And while Camilla may have copied Kate's footwear (is there anyone on the planet who hasn't?) she chose to pair her dress with a cream coat, pearl necklace and rose-pink wide-brim hat.
The ladies were out in support of their respective other halves, all of whom were taking part in the annual Order of the Garter parade.
Three royals, three very similar looks. Which is your favourite?
See our pick of Duchess Kate's top style hits: