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Christie's has promoted Kimberly Miller to the role of Global Managing Director of its luxury division. This move follows a period of strong performance for the auction house's luxury categories, which saw sales reach $795 million in 2025, a 17% increase, significantly outpacing its overall growth. Miller previously served as regional managing director for luxury in the Americas, where she oversaw jewelry, watches, wine, and handbags, and integrated the automotive auction house Gooding & Company.