Leo DiCaprio had a reunion with his “Titanic” co-star Kate Winslet at Broadway’s “Jerusalem” last weekend. Leo rolled up with Tobey Maguire and Lukas Haas, with a fellow theatergoer saying “all three were easier to recognize because they all wore baseball caps into the theater. Leo kept his on the whole show.” When they arrived, staff told them Kate was already there, and they were escorted to their seats a few rows behind Vogue’s Anna Wintour and her daughter, Bee Shaffer. Kate was one of the first to stand up for Mark Rylance after the performance, and all the actors and Wintour gave him a standing ovation.