Calvin Klein and his secret fashion show

Calvin Klein presented his latest spring/summer 2008 collection last night at London's University of Westminster . The show was part of a live art installation by Turner Prize-winning artist Martin Creed. Naomi Watts hosted the evening, which saw models standing on wrought iron staircases or parading rhythmically around an 18-piece orchestra set up on a catwalk-style plinth in the centre of the room. Mary-Kate Olsen, in huge black pony-skin ankle boots and a whimsical nude Calvin Klein evening dress, was guest of honour; she sipped Veuve Cliquot with the brand designer Francisco Costa and his fellow creative directors Italo Zucchelli and Kevin Carrigan in an exclusive corner booth, while London designers Richard Nicoll, Henry Holland and the Sinha-Stanic duo caught up following their own spring/summer shows.