The Friends of Dag Hammarskjold Plaza and the Turtle Bay Association will hold a garden party celebrating all things Katharine Hepburn on Saturday, May 12, from 1 to 3 p.m. The event is free and will feature a tour of Hepburn's eponymous garden, an exhibit honoring Hepburn's life and a screening of the film "Adam's Rib." For more information, call 212-826-8980.