Fashion Roundup: Beyoncé Designs Workout Gear, Mary-Kate Olsen Gets Hitched And two fashion companies get into the arts biz at Basel. By Dena Silver
New Online Venture, Tappan Collective, Seeks Emerging-Art Buyers at Lower-End of the Market Though the art business was remarkably slow in venturing onto the Internet, art-buying sites have proliferated in the past few By Charlotte Lindemann