THE FOURTH OF JUNE AT ETON

Picnics, cricket, boating and famous families – outfits need to multi-task

As well as an exercise in parental pride, this revered annual open day is also about social and sartorial one-upmanship – when fellow parents include swathes of international Royals, the competition is fierce. Mothers should opt for sleek, chic monochrome: Gabriela Hearst’s striped blazer is attention-grabbing but white Malone Souliers flats keep it on the right side of elegant. Dior’s playful graphic-print ensemble stands out for all the right reasons, while a Loro Piana nautical sweater will keep out the chill on the riverbank.

the queen mother with the queen and her godson charles spencer at eton £990, gucci £350, lock & co £740, brunello cucinelli earrings, £5,600, boodles £455, malone souliers £1,385, givenchy £2,650, dior £5,500, boodles £1,050, gabriela hearst £2,390,...