Courtney Whitmore

Courtney Elizabeth Whitmore, known as Stargirl (often called Stars or Star), is a superhero created by Geoff Johns and Lee Moder. She appears in American comic books published by DC Comics. 
Character settings.
The character's name, appearance, and personality were patterned after Johns' sister Courtney, who died in the explosion of TWA Flight 800 in 1996.
Courtney Whitmore was known as the second Star-Spangled Kid. But she began using the name "Stargirl" after she was presented with the Cosmic Staff by Jack Knight.
In media.
Stargirl has appeared in "Justice League Unlimited", "", "Justice League Action", and "Young Justice". She has also appeared in live-action shows "Smallville" played by Britt Irvin, "Legends of Tomorrow" played by Sarah Grey, and in her own television series played by Brec Bassinger.