Catwoman then called The Cat first appears in Batman #1 as a mysterious burglar and jewel thief, revealed at the end of the story to be socialite Selina Kyle. Although the story does not have her wearing her iconic catsuit, it establishes her core personality as a femme fatale who both antagonizes and attracts Batman.
Batman #62 revealed that Catwoman (after a blow to the head jogged her memory) is an amnesiac flight attendant, who had turned to crime after suffering a prior blow to the head during a plane crash she survived (although in the final issue of The Brave and the Bold, she admits that she made up the amnesia story because she wanted a way out of the past life of crime).
She reforms for several years, helping out Batman in Batman #65 and #69, until she decides to return to a life of crime in Detective Comics #203. Selina appears again as a criminal in Batman #84 and Detective Comics #211, her final appearance until 1966.