Yvonne Craig, the first actress to play Batgirl on screen, died this week after a two-year battle with breast cancer.
Fans took to Twitter to celebrate her legacy as one of the first actresses to bring a female superhero to life in the 1960s "Batman" TV series. Craig as Barbara Gordon fought crime, loved books and even educated TV viewers about equal pay.
Among the Batgirl fans who paid tribute to Craig today was former "Batgirl" writer Gail Simone, who in addition to sharing some thoughts on Craig encouraged her followers to do something brave in honor of Batgirl and share it by using the hashtag "BeBatGirl."
Check out how the Internet paid tribute to Craig below: