BURBANK, Calif. -- In its first significant move into the fitness category, Buena Vista Home Video will release a tape Jan. 13 starring supermodel Elle Macpherson. "Your Personal Best Workout With Elle Macpherson" will carry a suggested retail price of $19.99 and prebook on Nov. 29. It will be the first fitness video to be packaged in a clamshell case. The 45-minute title also features Karen Voight, a well-known fitness instructor. "For supermarkets that are in the fitness category, this is definitely going to be the hottest exercise tape to have this year," said Tania Moloney, vice president of publicity and event marketing, Buena Vista. She would not speculate on the number of units the company expects to sell, but said a million would be "a good start." Buena Vista is the video marketing, sales and distribution subsidiary of the Walt Disney Co. The company has issued children's exercise tapes in the past, but this is its first fitness tape for adults. "This really wasn't a case of wanting to get into the exercise category. We saw a combination of two people who were so talented and who worked so well together that they presented a very unique opportunity to market," said Moloney. The fitness category is lucrative, she said. Some 27 million consumers have purchased fitness tapes and Buena Vista's research showed that many of them continue to make frequent purchases. Marketing support will include aggressive advertising and public relations campaigns that will generate more than 1.7 billion impressions, she said. The ads will run on daytime, prime-time and cable television, along with print ads in women's magazines and fitness publications. The public relations campaign will land Macpherson and Voigt on the covers of national magazines, on TV morning and entertainment shows, and on local news broadcasts. Point-of-purchase materials will highlight a free mail-in offer of a combination water bottle and hand weight. Prepacks include 24- and 48-piece floor units, a 12-piece counter display and six-piece clip strips.