Los Angeles - Stardoll, an entertainment site for teen girls that features virtual dress-up dolls, announced this week that it has formed a partnership with Dualstar Entertainment Group, which manages consumer products for actresses Mary-Kate and Ashley Olsen. The deal will provide Stardoll's 10 million registered members access to mary-kateandashley brand virtual clothing and accessories. The celebrities will also interact with users via their "Real Celebrity" pages on Stardoll, and judge an online fashion show and other contests. The site will also be updated with video, music and photos of Mary-Kate and Ashley.