On May 23, 2025, Alison Oliver made a striking appearance at the premiere of The Mastermind during the 78th Cannes Film Festival at the Palais des Festivals in Cannes, France. Her red carpet moment was a blend of modern sophistication and timeless glamour, showcasing a meticulously curated ensemble that captured the essence of cinematic elegance. Notably, Alison accentuated her look with statement jewelry—reportedly including Cartier Panthere pieces—that added an extra touch of refined luxury, solidifying her status as a red carpet icon.