Blair Warner was played by Lisa Whelchel. Her age throughout the series was roughly 14 to 22 (an episode in the 1985-1986 season centered around her 21st birthday).
At the beginning of the series in 1979, Blair was played as very rebellious. She was seen smoking cigarettes, drinking beer, and had many boyfriends and was looking to lose her virginity, unlike a lot of the other girls she shared a house with. When the show was retooled in 1980, all instances of Blair's rebellion were either dropped or given to the new character of Jo Polniaczek and she was rewritten as an unashamedly spoiled "Daddy's Girl," whose business alone could have kept Bloomingdale's and Neiman Marcus afloat.
Blair was very vain and believed that she was perfect in every way. To her credit, Blair got good grades, won school awards, was crowned Harvest Queen for three years running, and even convinced a boy to move from Switzerland to attend school near her (when asked about it, Blair dryly remarked, "I've done it before.") Blair's delusions of grandeur were usually played for laughs when Natalie, Tootie or Jo would make sarcastic remarks about her "beauty", "perfect" personality, or her "naturally blond hair". Blair felt she was more important than other, "regular" people because she was the heiress to her father's multi-million dollar business, Warner Textile Mills. Any crisis at Eastland would usually prompt a suggested solution from Blair, ...