EXHIBIT 21 SUBSIDIARIES OF REGISTRANT WEIGHT WATCHERS INTERNATIONAL, INC. SUBSIDIARY JURISDICTION OF ORGANIZATION W.W. Inventory Service Corp. Delaware W.W. Weight Reduction Services, Inc. New York W/W Twentyfirst Corporation New York Weight Watchers Direct, Inc. Delaware W.W.I. European Services, Ltd. New York Weight Watchers North America, Inc. Delaware Weight Watchers (U.K.) Limited United Kingdom Weight Watchers France SARL France Weight Watchers Sweden Vikt-Vaktarna Sweden Akiebolag Il Salvalinea, S.R.L. Italy Weight Watchers Belgium, N.V. Belgium Weight Watchers Deutschland GmbH Germany Weight Watchers Eesti Aktiaselts Estonia Weight Watchers Suomi Oy Finland Gutbusters Pty Ltd Australia Fortuity Pty Ltd Australia Weight Watchers (Switzerland) S.A. Switzerland Weight Watchers Polska Sp. z.o.o. Poland Weight Watchers Latvia Latvia Weight Watchers Nederlands, B.V. Netherlands Weight Watchers International Pty Limited Australia Weight Watchers (Accessories & Publications) United Kingdom Ltd Weight Watchers (Exercise) Ltd. United Kingdom Weight Watchers (Food Products) Limited United Kingdom Waist Watchers, Inc. Delaware Weight Watchers UK Holdings Ltd United Kingdom Weight Watchers International Holdings Ltd United Kingdom Weight Watchers New Zealand Limited New Zealand Weight Watchers Funding, Inc. Delaware 58 WW Food Corp. New York Weight Watchers Camps, Inc. New York W.W. Camps and Spas, Inc. Delaware WW Foods, LLC Delaware