When did supergirl first appear in the comic books?

Kara Zor-El is a fictional character appearing in comic books published by DC Comics and related media, created by writer Otto Binder and designed by artist Al Plastino. As Supergirl, Kara Zor-El serves as the biological cousin and female counterpart to DC Comic's iconic superhero Superman, created by writer Jerome Siegel and designed by artist Joseph Shuster. The character first appeared in a story published in Action Comics #252 (May 1959) entitled "The Supergirl from Krypton." Since the character's comic book debut, Kara Zor-El's Supergirl has been adapted into various media relating to the Superman franchise including merchandise, television, and feature film, making her a cultural icon. However, during the 1980’s and the revolution of the Modern Age of Comics, Superman editors believed the character’s history had become convoluted, and desired to reestablish Superman as "The Last Son of Krypton." To that end, Supergirl is killed during the 1985 limited series Crisis on Infinite Ea ... more

Supergirl is a fictional comic book Superhero that is depicted as a female counterpart to the DC Comics iconic superhero Superman. Created by Otto Binder and Al Plastino in 1959 and appearing in Action Comics. The character first appeared in comic books and later appeared children's cartoon animation, film, and television. As Supergirl, the Kara Zor-El character plays a supporting role in various DC Comics publications, including Action Comics, Superman, and several other comic book series unrelated to Superman. In 1969 Supergirl became lead feature in Adventure Comics and later starred in an eponymous comic book series which debuted in 1972 and ran until 1974, followed by a second monthly comic book series titled The Daring New Adventures of Supergirl, which ran from 1982 to 1984. Sources: http://en.wikipedia. ... more