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.

The company began testing “flash” sales - short-term sales of a small selection of merchandise - late last year. It launched “Fashion Vault” earlier this week, putting it directly in competition with private sales players like Gilt.com and Ruelala.com, which sell trendy clothing and accessories at deep discounts.