It's a boy!

Hunger Games actress Jena Malone announced the birth of her first child with boyfriend Ethan DeLorenzo via Instagram on Tuesday, sharing a sweet pic of the couple with their newborn son, named Ode Mountain.

"The best weekend of our lives!!! What an incredible blessing to be chosen by this amazing , kind , gentle and beautiful soul to be his parents," the 31-year-old new mom wrote. "Humbled and in complete awe that we get to experience the most ancient and transcendent love that exists."

PHOTOS: Stars Share Pics of Their Cute Kids

And with a name like "Ode Mountain," it's clear the parents are trying to instill a sense of nature in their little one.

A few weeks ago, the couple took a "babymooning" trip in Yosemite National Park, where Malone shared a covered-up nude photo of her sizable bump, paired with a poem about her impending motherhood.

Congrats to the happy family!

WATCH: Erika Christensen Shows Off Baby Bump in New Instagram Pic

Meanwhile, there's another new mom in Hollywood!

Watch the video below to see what Anne Hathaway says her experience has been since becoming a mother.