Katherine Anne "Kitty" Forman (née Sigurdson) is a fictional character on the Fox Network's That '70s Show, portrayed by comic actress Debra Jo Rupp. Kitty is a nurse but sometimes takes a break from her career to make peace in the family. She also has a very recognizable laugh (an accident on Debra Jo Rupp's part) and a fondness for square dancing. Kitty is in very many ways a typical 1970s wife and mother, putting her family first and always trying to smooth over the many conflicts within her household, although her efforts often fail. She is an unofficial foster mother to the entire group and is a source of comfort and advice for them all.