Kevin Mazur / WireImage 1 / 7
Kevin Mazur / WireImage 1 / 7

Hannah Hart and Grace Helbig are sweating -- and not just because they're two of the hottest women on the Internet!

The YouTube stars, who are often described as the Tina Fey and Amy Poehler of the web, are gearing up for what's poised to be their biggest project yet: starring in Legendary's reboot of the superhero comedy "Electra Woman and Dyna Girl."

But they weren't always their usual confident selves when it came to making the jump from the Internet to starring roles in a feature film, they told Wonderwall.com during the 2016 MTV Movie Awards.

"It was very, very cool to dive in," Grace told us of acting in "Electra Woman and Dyna Girl," which debuts on June 7. "[We] really want to be taken seriously in the world of acting and also [didn't want] to be embarrassed in front of even the crew that we were filming in front of. We hope that people like it. We really worked hard on it."

"Honestly, we can say from our heart of hearts that it doesn't suck," she added. "We've seen it and we enjoy it."

"It's delightful," chimed in Hannah. "I'm happy to say that I'm proud of every project that I've done and that we do, but 'Electra Woman and Dyna Girl' holds a special place in my heart because it's a story about two superheroes who move to Los Angeles to make it big but also to maintain their friendship, which are both things that I really care about."

As for what Harto described to us as "real acting" -- "I ate it up with a spoon," she says.

"It just gave me all the more respect for the training, the practice, the time and the care that actors [put in] -- not only to work at emoting and acting but the physically demanding parts [as well]," she continued. "I just give them props, props, props."

Though only one chapter of "Electra Woman and Dyna Girl" has been ordered at this point, Hannah and Grace haven't ruled out the possibility of returning to their superhero alter egos at some point in the future.

"This is the first take at creating this universe and figuring out how these characters exist and what their potential could be," says Grace. "Of course we like it, so we already want to continue on with it. We're hoping everyone else enjoys it as much as we do so that we actually have a reason to continue."

And, hey, if the whole feature film thing doesn't work out, the duo still have their sprawling digital empires to fall back on.

As for how they keep their heads on straight while juggling so many projects and responsibilities, Hannah had this to say: "It's ok to be stressed out. Don't let stress rule you."

"I also think it's wonderful to ask other people for advice and ask other people for help," chimed in Grace. "A lot of times, we're islands of one. We do everything ourselves. We wear 10,000 hats because we're all perfectionists and we might have trust issues. But I think it's really wonderful when you can actually say, hey, can you come intern for me and we'll start figuring out how we can help each other."

"I always tell Grace that if she needs an intern, I'm right here," added Hannah.

As if she needs another hat!