According to this, Jaime Hernandez inspired Frank Miller when creating Carrie Kelly (Robin in The Dark Knight Returns). John Bryne, encouraging the idea of a female Robin, showed Miller this drawing of Maggie from a 1982 issue of The Comics Journal.
Beautiful Palomar pin-up by Gilbert Hernandez. Originally published in the Love & Rockets calendar and later collected in Hernandez Satyricon (L&R Library vol. 15), published by Fantagraphics, August 1997.