eBay Inc. may be the biggest online clothing seller, but it's still known for selling other people's castoffs. Now it wants shoppers to think of it when looking for trendy duds like hipster jeans and red ballerina flats. EBay will launch a new fashion microsite Monday. It's the latest in a series of changes that will sometimes have it acting more like an outlet mall or "private sale" Web site. EBay is working with major fashion brands and retailers such as Hugo Boss and Lord & Taylor to act as sellers. The new microsite, fashion.ebay.com, will bring together several new ways of selling.