Kristen Bell talks daughters' sisterly bond: I'm 'overjoyed that they're defending each other'

The wait is finally over: "Frozen 2," one of the most anticipated movies of the year, hits theaters this weekend.

The tale of sisterly love and self-love continues, and stars Kristen Bell and Idina Menzel, who play Anna and Elsa, respectively, tell ABC News it's an extremely important message, delivered in a way even young kids can understand.

"If you don't have self-love or familial love, romantic love might not be in your future," Bell explained. "Those are sort of the first two steps. So to put that on the front burner for kids to digest in a way that's simple for them just makes me feel pride."

"It's groundbreaking. And it feels good to be a part of that," added Menzel.

It seems to be a message Bell's two daughters, ages 6 and 4, with husband Dax Shepard, star of ABC's "Bless This Mess," already grasped.

"Like the older one will do something silly and I'll reprimand her and I'm like, 'Do you need to take a time out?' And the little one will come up and go, 'Don't talk to my sister! Leave her alone!'" Bell said. "And then I'm like, it's funny and I want to laugh, but I'm also, like, overjoyed that they're defending each other."

The film also includes a fun and interesting journey for co-star Josh Gad, who voices the lovable snowman Olaf.

"I love the growth of him going from sort of toddler to more fully fledged child where he's starting to ask questions and have these existential sort of thoughts," he told ABC News.

Jonathan Groff, Sterling K. Brown, Evan Rachel Wood, Alfred Molina, Martha Plimpton, Jason Ritter and Rachel Matthews round out the voice cast of "Frozen 2," opening nationwide on Friday.

Disney is the parent company of ABC News.