Watch out, ladies of Wisteria Lane, because Wilhelmina Slater is coming to town. According to reports, 'Ugly Betty' alum Vanessa Williams is joining the cast of 'Desperate Housewives' season 7 as a series regular. "She'll be moving into the neighborhood next season to cause trouble in all the ladies' lives," said creator Marc Cherry, though she won't be at the forefront of next season's mystery. No word yet on Williams' premiere date.
