The Real Reason Lisa Bonet Left The Cosby Show

Lisa Bonet was only 17 years old when she landed the coveted role of Denise on "The Cosby Show," and she became one of the breakout sitcom stars of the time as a result. She even starred in her own spinoff, "A Different World," for a season before returning to "The Cosby Show." But she didn't stay for all that long.