All of my life people have thought of me as Bing Crosby's daughter. Now they'll remember me as the person who shot J.R.

She graduated from high school at 15 and entered the University of Texas at Austin where Mary Crosby became a member of Delta Delta Delta sorority and dropped out before graduating. She is fluent in Spanish. Career
Crosby may be most noted for her role as Kristin Shepard (Sue Ellen Ewing's scheming sister) on the prime time soap opera Dallas from 1979 to 1981 and 1991.

Mary Frances Crosby (born September 14 1959) is an American actress best known for her role as Kristin Shepard in the television series Dallas (1979–1981).