Dynamic duo Grace Helbig and Hannah Hart are YouTube superstars — and let's not forget Grace has her own TV show on E! — who are now superheroes, thanks to the digital reboot of the '70s series Electra Woman and Dyna Girl. Grace and Hannah explain how they evolved the characters, in particular their crime-fighting wardrobe, to transcend the old-school idea of "girls in costumes," what they learned at superhero boot camp, and why being at Comic-Con International: San Diego was a "surreal" experience. Plus Grace even calls out Hannah for her geeky fan-fiction-writing past!
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