Photo: Jenna Bush Hager/Instagram

Jenna Bush Hager Says Niece Cora ‘Knows How to Celebrate’ as Family Gathers for First Birthday. Jenna Bush Hager celebrates niece’s birthday.

Jenna Bush Hageris loving life as an aunt.

While chatting with PEOPLE about her new partnership with Dawn, for which she wrote a digital children’s book entitledThe Wonderful World of Blue, theTodayco-host opened up about watching her twin sisterBarbara Bush Piercerecently become a mom as well as the sweet bond between her three children and their 1-year-old cousinCora Georgia.

“I think watching somebody you love become a mom, watching [Barbara] have her dreams come true has been this incredible gift,” Bush Hager tells PEOPLE.

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The Wonderful World of Blue - Jenna Bush Hager

Bush Hager says the love between all the cousins — she and husband Henry Hager shareHenry “Hal” Harold, 2,Poppy Louise, 6, andMargaret “Mila” Laura, 9, while Bush Pierce shares Cora with screenwriter husbandCraig Coyne— has been fun to watch grow, particularly with her youngest child.

She adds of the family’s recent first birthday party for Cora, “We just got to celebrate her and it’s so fun because they’re so close in age.”

Bush Hager says her children played a huge part in her decision to partner with Dawn on their new initiative and continuous work with wildlife as she encourages her kids to advocate for good causes.

“I know the work Dawn does on behalf of wildlife and I know how it’s more important than ever,” she tells PEOPLE. “As a mom of three kids, I wanted a way for our kids to be wildlife heroes and get involved.”

“I feel like children’s books are a perfect way to introduce kids to concepts they may not be aware of and make sure they know they can do good,” the children’s book author continues. “Our kids are capable of whatever we expect of them, so if we expect them to help us save the world, they’re going to save the world.”

Says Bush Hager, “The Wonderful World of Blueis such a great opportunity because it gives specific details on how our kids can help and I think that is what kids want — they want to be thought of as the empowered, awesome creatures that they are. They’re good forces in this world.”

source: people.com