This is like the poor woman's First Wives Club: Brooke Shields, Rosie Perez and Mercedes Ruehl will co-star in ABC's new "limited-run" series, Widows. It's about gal pals who conspire to avenge their slain art-thief husbands by pulling off a daring art heist. The first of four hour-long episodes debuts Aug. 6 at 10 pm/ET.