Wonder Woman's not only the longest-lasting female superhero...she's still going strong.

Outfits and gadgets from her upcoming movie were on show at Comic-Con in San Diego to mark the milestone alongside those from her classic TV shows.

Jim Lee, comic book artist and co-publisher of DC Entertainment, says she's not just some mere mortal.

"She's a demigod, she's not like a lot of us and yet she stands for a lot of these aspirational values and she can be very intimidating so there's a lot of interesting things about the character that give creative artists and writers a lot of fertile ground to tell unique and interesting stories and that's a big part of her longevity and appeal."

Wonder Woman first appeared in the eighth edition of All Star Comics in December 1941, the creation of American psychologist and writer William Moulton Marsden.

But it's taken until now for the superhero to hit the big screen...Warner Brothers' Wonder Woman movie is due for release in June next year.