**High-profile celebrity attendance at the 2026 US Open has intensified around the semifinals, particularly the all-American men’s clash between Ben Shelton and Frances Tiafoe.** Stars including Serena Williams, Jalen Brunson, Ben Stiller, Salma Hayek, Rami Malek, and others were spotted courtside, reflecting the event’s draw for New York-based athletes, actors, and athletes tied to the local sports scene. With Shelton advancing to face Alexander Zverev in the men’s final on September 13 and Aryna Sabalenka meeting Elena Rybakina in the women’s final on September 12, trader consensus prices reflect expectations of sustained VIP turnout at Arthur Ashe Stadium. Factors such as the American finalist’s appeal, the tournament’s overlap with New York Fashion Week and social calendars, and patterns from prior Grand Slams influence implied probabilities for specific names. Late confirmations or social-media signals from prominent figures could still shift shares before resolution.