Gabrielle Carteris in ‘Beverly Hills, 90210’
“Beverly Hills, 90210” premiered in 1990 and became the first hugely popular teen TV drama, so it probably deserves a significant share of the blame for the age-inappropriate casting of its many imitators. The show’s most questionable casting choice was Gabrielle Carteris, who was 29 at the start of Season 1, and 32 by the time her character, valedictorian Andrea Zuckerman, graduated from high school in Season 3.