LATEST: GREY'S ANATOMY star Kate Walsh will marry her fiance Alex Young over America's Labor Day weekend (01-03Sep07). The couple became engaged after movie mogul Young proposed in May (07), and they plan to wed at the Ojai Valley Inn + Spa in California in a sunset ceremony. Walsh will wear a custom-made Monique Lhuillier wedding dress. Guests at the ceremony will include Walsh's Grey's Anatomy co-stars Katherine Heigl and Sara Ramirez, according to