NEW YORK − Things are a little different for Jenna Bush Hager at work this week. The “Jenna & Friends” host will share the fourth hour of the “Today” show with a number of family members through Friday.

“I feel like I’m more nervous (with family) than when I have other guest co-hosts,” the daughter of former President George W. Bush, 43, tells USA TODAY. The NBC News correspondent worked with her twin sister Barbara Pierce Bush on Monday and welcomes her back Tuesday. For the rest of the week, she’ll be joined by cousins Wendy Stapleton and Sam Bush LeBlond followed by her husband, Henry Hager.

“I wanna make sure (my family feels) comfortable,” she adds. “But Barbara’s a pro. She’s really good at it. So this has been an easy way to ease into the week.”

The sisters are teaming up for more than just a few hours of television this week: Jenna and Barbara are celebrating the release of their fifth book together, “I Loved You First” (Little, Brown and Company, 40 pp. Out now). 

The book illustrates a parent’s love for their child through shared experiences like counting constellations, dancing in the rain and hiking outdoors. Bush Hager says “I Loved You First” is “about what it feels like to be a parent and how adored our children are from the very beginning.”

Check out: USA TODAY’s weekly Best-selling Booklist

A tour to promote the children’s book, the fifth they’ve worked on together, also kicks off Tuesday in Madison, Connecticut, and wraps Sunday in Fort Worth, Texas.

“What’s really fun is (readers will) come and they’ll tell us what they loved about the last book,” Pierce Bush, 43, says of the book tour stops. “And that’s what we then see as our inspiration for our next ideas.”

Aside from co-authoring, the sisters are also co-founders of a nonprofit organization, Global Health Corps, that aims to tackle global health challenges by identifying and empowering emerging health leaders throughout the world.

The Bush sisters won’t rule out working with dad

While meeting readers and fans on the book tour, the Bush sisters inevitably will hear stories from others about their parents and grandparents, the late President George H.W. and former First Lady Barbara Bush.

“It’s unusual to have such public parents or to mourn publicly when we lost our grandparents,” Pierce Bush says. “But then we meet people who have their own personal stories about them. I still feel now, even though our grandparents have been dead a few years, (that) we’re still discovering who they are because people will come to our book event and have an anecdote about meeting them.”

“We get to keep learning about the people that we love,” she adds.

As for the sisters’ parents, former President Bush has taken up painting as a hobby and has released two books filled with his work. However, he has yet to contribute to any of his daughters’ projects, although the interest is there.

“Talk to us in the future,” Pierce Bush teases.

How the Bush sisters are tackling parenting in the digital age

Since their father wasn’t elected president until they turned 18, the Bush sisters say they led a pretty “normal” childhood. Still, the world they grew up in compared to what their children are experiencing is vastly different.

“I want my kids to feel just as important as we felt, and not that I’m looking at them when I’m not looking at a screen,” Pierce Bush says.

Between them, they have five children ranging from 7 months old to 11 years old. “I just want them to know I’m fully present with them,” Pierce Bush adds. “And that’s something that I definitely remember from our childhood.”

Bush Hager is quite strict about screen time and thinks it may have been passed down by her mother, Laura.

“We had a mom that never had junk food in our house, so we would sneak out and go to the neighbors to get Twinkies and such,” she jokes. “My daughter’s in sixth grade; most of her friends have cell phones. She does not; she uses my old iPad to text with her friends. She will not have social media for a bit. We’re trying to work together as opposed to it becoming a fight.”

Through co-authoring another children’s book, the sisters hope they’ll give readers a reason to ditch their screens.

“This really is for the parents as much as the kids,” Bush Hager says of “I Loved You First.”

The book, illustrated by Ramona Kaulitzki, is “all about that feeling of seeing the world through your kids’ eyes, which is such a beautiful, special thing if we put our devices away and just are zoned in to our hilarious, empathetic kids. The world is so much sweeter.”