A video uploaded to the twin sisters' YouTube channel shows the girls discovering that they are twins.
"Let's put them in front of the camera and tell them that they're twins as they go and see what happens," Justin McClure, who films the girls' videos, said.
One part of the video in particular is gaining traction on social media.
In a clip, Alexis gets upset when she's told by her mother off camera that Ava is a minute older than she is.
"But I want to be older," Alexis says.
"You want to be older? Don't cry," Ami McClure, says. "But Lexi, I can't make you older. She was born first by one minute. You're one minute younger. You don't have to cry."
Ava tries to help out by comforting her sister, but Alexis wasn't interested.
"I'm just one minute older, that's it," Ava said.
Ava tries to cup her sister's face and give her a hug, but Alexis scoots away.
The video gives a brief look at the twins' relationship, but Justin McClure said the point of the channel is to function as an online memory book of sorts.
"We made a video channel so that they can look back in their life and look back and explain to who they are as sisters," he said.
Justin McClure said his daughters are "both very, very sweet, very affectionate."
"They don't know that they're super cute. People tell them and they're really bashful," he said.
"I think they understand the concept of twins because they see them on TV and such. They do know they look like each other, but it's not a big deal to them at all.
"Alexis is very bashful in public but a bully to me. Every time I say something to Ava, she'll jump in front of her and say, 'No, Dada! That's my sister!' Very emotional very sweet … more of the athlete."
"Ava is very inquisitive, very curious. She always questions everything I do ... Every night I turn out the lights and she'll walk to the light, turn the light on, then turn it off."
Adorable and funny videos aside, Justin McClure said time together as a family is a top priority.
"Our biggest focus is being present with each other and spend time together," he said. "They are very free to be themselves -- 100 percent."
Watch the full video below:
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