Gia is about an American supermodel.
Gia is a 1998 biographical HBO film about the life and times of one of America 's first supermodels , Gia Marie Carangi . Gia Carangi . Considered by some to be the first supermodel , she was featured on the cover of fashion magazines , including multiple editions of Vogue and Cosmopolitan , and appeared in advertising campaigns for such fashion houses as Armani , Christian Dior , Versace , and Yves Saint Laurent .