Mr. Straczynski, who created the television show “Babylon 5” and wrote the screenplay for “Changeling” in 2008, starring Angelina Jolie, said in an e-mail message that he wanted to address “the wardrobe issue” as soon as he took the job.

Image Wonder Woman’s uniform has reflected her times. Above, her outfit in about 1941. Credit... DC Comics

“She’s been locked into pretty much the exact same outfit since her debut in 1941,” Mr. Straczynski wrote. “If you’re going to make a statement about bringing Wonder Woman into the 21st century, you need to be bold and you need to make it visual. I wanted to toughen her up, and give her a modern sensibility.”

He added, “What woman only wears only one outfit for 60-plus years?”

Given Wonder Woman’s pre-eminence as a female character in the largely male superhero pantheon, her looks have always been a matter of more than casual interest, to both fanboys and feminists. In a 2006 interview about her work on the series, the novelist Jodi Picoult said: “One of the first things I did was ask if we could give her breast-reduction surgery, because as a woman, I know you wouldn’t fight crime in a bustier. But I was somehow shot down by DC.”

Image Wonder Woman, in Issue 600 of her monthly series, rocks out with a new costume and history. Credit... DC Comics

The new costume was designed by the artist Jim Lee, who in February was named co-publisher of DC, alongside Dan DiDio. Given the assignment, “my first reaction was, ‘Oh my gosh,’ ” Mr. Lee said in an interview. But he welcomed the challenge: “When these characters become so branded that you can’t change things, they become ossified.”