Will Smith was born on September 25, 1968. When "The Fresh Prince of Bel-Air" first aired in September 1990, he was 21 years old, just two weeks shy of his 22nd birthday
. Despite playing a high school teenager named Will who was supposed to be about 16 or 17 years old at the start of the series, the real Will Smith was already an adult in his early twenties during filming
. By the time the show ended in 1996, he was 27 years old
