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Attendees partake in the ceremonial divot stomp, which traditionally happens halfway through the match.
Michael B. Jordan, Rose Byrne, Olivia Palermo, and Tyler and Cameron Winklevoss were among those who sipped bubbly while watching team Veuve Clicquot take on team Black Watch on horseback. Guests were encouraged to don chic summer outfits and bold hats - and most attendees clearly got the memo.
Keep scrolling to see what went down at the glamorous, sunny event.