ASCOT, United Kingdom - Pomp, pageantry and Pimm's, plus a vast array of elaborate hats, makes Royal Ascot a truly English affair - but Britain's most prestigious horse race meeting is attracting a growing international contingent.
More than 300,000 people are expected during the course of the five-day extravaganza in Berkshire, southeast England, attended yearly by Queen Elizabeth II - with Ladies Day on Thursday a sartorial highlight of the upper class social calendar.
Steeped in three centuries of tradition, and with a strict dress code to observe, the first hurdle for international visitors is negotiating the rules of etiquette.
Taiwanese couple Chinghan Wang and Tienjen Hsieh, who are studying in London, said they spent about a month researching and preparing their outfits.
"It's a formal event, part of British culture. That's what we want to experience," said Wang, wearing a demure, ivory-coloured dress and matching fascinator.
Tienjen, dressed in top hat and tails, adds: "There's not much of a hat culture in Asia. People would think you were weird if you wore this back home." The meeting has attracted a record number of international entries this year as 10 countries are represented across the Group One races, between them fielding 19 horses trained outside Europe.
The line-up includes horses from Australia, Hong Kong, Japan, Sweden and the United States as well as the usual bumper crop from France and Ireland.
"A lot of horses that are running in Britain now are owned by people overseas and they want to have runners at Ascot. We are seeing that more and more," said Nick Smith, head of Communications and International Racing at Ascot.
The international flavour of the racing is mirrored on the stands where aristocracy and nouveau-riche rub shoulders.
Ladies' Day is the key event in style terms, with attendees parading an array of exquisite milliners' creations teamed with designer frocks.
Anna Mott, the Australian co-curator of London Hat Week, turned heads as she arrived at Ladies Day wearing a colourful creation by her compatriot Peggy Lea - a towering display of Australian fauna.
Mott said she travels the world to attend horse races but that "the tradition is exceptional here".
"I love the fashion here, I love the people. I am a royalist and I just love the queen. I waited about an hour and a half to see her yesterday!" Each race day officially begins with the Royal Procession - the arrival of the queen by horse-drawn carriage - and the raising of the Royal Standard.
Once the preserve of the elite, for many visitors Ascot is now an opportunity to indulge in the lifestyle of Britain's aristocracy - if for only a day.
As attendees stream through the gates in their finery, the first hurdle for international visitors is overcoming a strict dress code.
Rules of attire vary for each of the three enclosures, with the strictest to be observed at the Royal Enclosure where women must wear hats, dresses must be "modest length, fitting just above the knee", and men must be in top hats and tails.
The less formal Grandstand stipulates a feather fascinator for women as a minimum requirement in headwear.
Getting it wrong can mean at best embarrassment, at worst the end of the party.