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After taking in the Armani Prive show at Couture Fashion Week, Katie Holmes hopped a flight to London to join design partner Jeanne Yang for a preview of the latest collection from their Holmes & Yang label at posh department store Harvey Nichols. The two met up with and fellow designer Heather McQuarrie at the event. Click through to see Elizabeth Hurley, Milla Jovovich and Alexa Chung at last night's hottest parties!