British ladies and gentlemen have been dressing up in their finest outfits this week for one of the highlights of the sporting and social calendars – the Royal Ascot horse races. /VCG Photo

The Ascot Racecourse in Berkshire, southern England was founded in 1711 by Queen Anne. Audiences at the prestigious venue tend to compete with their fancy outfits, especially hats. /VCG Photo

From the first race in 1711 to today’s blowouts attended by Elizabeth II and other members of the British Royal family, Ascot has witnessed over 300 years of the latest styles. /VCG Photo

On Tuesday, the opening day of the posh event welcomed plenty of debutantes flaunting eye-catching headgear. /VCG Photo

Catherine, Duchess of Cambridge attended day one, wearing an elegant white lace dress, cutting a low profile among the more lively frocks. /VCG Photo