Brock and Reba's oldest daughter, who initially is looking forward to her senior year of high school before learning that she is pregnant. She marries her boyfriend, Van Montgomery, and they move in with Cheyenne's mom, Reba. Cheyenne gives birth to their daughter, Elizabeth, after going into labor on graduation day. At the beginning of the series, she comes across as a typical dumb blonde and is self-centered and irresponsible. However, her intelligence and sense of responsibility improve as she raises her daughter and studies dentistry in college. She is highly sensitive, especially when she is insulted (mainly by Kyra, her younger sister). Cheyenne later helps out at a homeless shelter, improving her shallowness greatly. When she comes to the realization that she is an alcoholic, she's