Complex sentence: Nye made her feature film debut in "The Group", the 1966 film adaptation of Mary McCarthy's bestseller about a gaggle of Vassar students, which also starred Joan Hackett, Joanna Pettet, Candice Bergen, Kathleen Widdoes, and Shirley Knight.
Split into simpler sentences: Nye made her feature film debut in "The Group" (1966), the film adaptation of Mary McCarthy's bestselling novel about a group of Vassar College students. The film also starred Joan Hackett, Joanna Pettet, Candice Bergen, Kathleen Widdoes, and Shirley Knight.