ANSWERING A CALL: British artist Tracy Emin took time away from her canvases to pop into Vivienne Westwood's after-show party Sunday in London. “I don’t really have time to be out: In six weeks I have an exhibition at my gallery in New York,” referring to the Lehmann Maupin gallery. Her new works, she said, "will be similar to my line drawings." Revelers also included Pixie Geldof, who had walked the runway for Westwood earlier, and model Tarifi, who was to participate in an installation being video taped by Nick Knight. “I am going to be sitting in a large transparent box, answering phones,” laughed Tarifi, who also just wrapped a John Richmond campaign.