A GOOD TIME: Donald Trump may have already given his wife a big diamond ring, but perhaps he should be considering a big diamond watch, as well. Melania Trump was wearing Vacheron Constantin’s $600,000 44-carat Lady Kalla silhouette at the Swiss watch brand’s 250th anniversary party she hosted at the New York Public Library on Monday, and the sparkler turned almost as many heads as the model herself.

Although Trump made just a brief appearance, the soiree raged on well after its scheduled ending time of 10 p.m., with some 400 guests bumping elbows in the library’s foyer. Guests included the evening’s honorees, Isiah Thomas, Eric Ripert and Albert Maysles, as well as artist duo Christo and Jeanne-Claude, Leonard Lauder, Olivia Chantecille, Tara Subkoff and Patricia Field.