Zara and Mike Tindall have given the changes to Cheltenham's dress code their royal approval.
The couple praised the 'inclusive' nature of The Jockey Club's decision, made just weeks before the 2023 Festival.
Fans at the four-day meeting, the pinnacle of jump racing, will no longer be bound by rules telling them to wear a formal outfit. Instead racegoers, who numbered 280,627 overall at last year's event, have been advised to go 'dressed to feel your best'.