Kitt, who had recently been treated for cancer at Presbyterian Hospital in New York, succumbed to the disease on Thursday.
According to her official website, Eartha Kitt is "one of only a handful of performers to be nominated for a Tony (three times), the Grammy (twice), and Emmy Award (twice)."
As a singer, Eartha Kitt boasted a highly distinctive voice with which she scored a number of hits, including "C'est si bon," "Just an Old Fashioned Girl," "Let's Do It," "Love for Sale," and the "Tribes of Africa", for which she was nominated for a Grammy award.
As the villainous Catwoman on the campy "Batman" TV series of the late 60s, she owned the role with her one-of-a-kind "purrrrfect" growl.