Fashion fiend: Serena "ReRe" Williams continued her fashion-hopping ways this week. After getting front row duties at Zac Posen's show, the former tennis World No. 1 checked out Tommy Hilfiger's Spring 2008 collection. This time around, ReRe went the casual route, opting for a khaki cotton trench coat, chocolate brown scoop neck tee, and jeans. The hair, one of our favorite styles on ReRe, was still working as well.