Colbie Caillat and Christina Perri Are Taking Their Girl Power on the Road

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Grab your girlfriends and get ready for a night of pop music and empowerment! (Oh, and boys can come, too.)

Colbie Caillat and Christina Perri are hitting the road this summer on a co-headlining tour, appropriately titled Girls Night Out, Boys Can Come Too. With "Fight Song" newcomer Rachel Platten opening, the singers hope that fans leave their show "feeling good about themselves."

WATCH: Colbie Has the Cutest 'Friends'-Related Proposal Story 

"The songs that we write are really meaningful and on the same page of finding out who you are and representing it," Caillat told ETonline.

"The fact that there's three of us doing that, three of us making a point like that, I think it's really powerful," added Perri.

Caillat made headlines last year with her emotional music video for "Try," which saw the songstress evolve from full stage makeup to completely bare-faced. Perri, meanwhile, bared her soul with the perfectly-imperfect anthem "Human."

The Girls Night Out... tour kicks off July 10 in Uncasville, Connecticut, and will travel through North America before wrapping on August 30 in Vancouver, Canada.

"I hope we all sing together, I think that's something people can expect," said Perri. "The more we talk about it the more excited I get! I really can't wait!"

WATCH: Behind the Scenes With Christina Perri at Live in the Vineyard

Perri and Caillat will take turns closing out the show and joining forces on select songs from their respective repertoires. Both stars say they rarely write music on the road, but that doesn't mean new tunes aren't on the way.

"I'm working on album three," Perri said. "I've been writing, all the little breaks between all the tours, I didn't realize I was writing.

"I did this thing where I'd put all my little voice memos in a folder called Album Three, and then I didn't look at it until like a month ago and I have 45 things in there," she continued. "They're not real songs, I probably have 10 songs out of 45 parts, but I guess I've been writing my third album. I didn't really notice, so I think I'm gonna go right into it around October, November."

Caillat has also been in the studio lately, but warns that she's not quite ready for a new release.

"I've been back in the studio with Babyface," she said, "but I don't plan on putting another record out for quite a while, 'cause this one's still going. But it's really hard not to write. We're friends with all of the people we write with, so it's really fun to get back in the studio and create something new and get excited about it."

So can we (tentatively) get excited about more collaborations from Perri and Caillat?

"Maybe after we're done touring and write some new songs," Caillat muses, with Perri adding: "I do plan on hanging out a lot, just 'cause I feel like we will. So if that happens naturally, that would be really cool."

WATCH: Ed Sheeran Dances His Ass Off

Before that, Perri will hit the road with hitmaker Ed Sheeran just after Girls Night Out… wraps. One thing fans can definitely expect: a live rendition of the pair's duet, "Be My Forever."

"Ed and I have some ideas," Perri teased. "We have weird ideas with costumes and a couple different songs. He's as silly as I am, so we'll see what actually happens but it's gonna be a lot of fun."

ETonline found out plenty more about these powerful ladies, including who's hosting the post-show dance parties and whose voice makes a "weird high-pitched sound" when she meets celebs. Watch in the video above! (Below, Caillat gushes over her fiance's super-cute Friends-related proposal.)

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