Bindi Irwin is expecting a baby girl.
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Bindi Irwin Revealed The Sex Of Her First Child With The Help Of A Giant Tortoise

Just like the deeply devoted animal lover she has always been, Bindi Irwin revealed the sex of her baby with a sweet, heartfelt Instagram post featuring a tortoise.

After announcing that they're expecting their first child together on Aug. 11, five months after getting married in March, the mom-to-be and her husband Chandler Powell revealed on Tuesday that they'll be welcoming a little girl next year.

"Baby girl, you are our world," Irwin captioned a photo of herself and Powell posing with tortoise surrounded by pink flowers and a holding sonogram image. "Our beautiful daughter is now about the same size as a hatchling Aldabra tortoise and is as healthy as can be. We can’t wait for her arrival next year."

Of course, Irwin's adorable zoo-themed sex reveal followed the same theme of her pregnancy announcement back in August. At the time, she and Powell announced their exciting news by holding up a tiny khaki shirt like the ones worn by Australia Zoo employees. "Baby Wildlife Warrior due 2021," she wrote on Instagram over the summer. "Chandler and I are proud to announce that we’re expecting! ... Though I’m still in my first trimester, we really want you to be part of our journey from the beginning of this new life chapter."

Powell also shared the exciting news that he was going to become a girl dad on Instagram. "Our little girl and my beautiful wife are my entire world," he wrote. "I’m so excited to meet our daughter when she’s born next year and to see the incredible person she will grow up to be."

As an employee of the Australia Zoo and a lifelong wildlife activist, Irwin continuously incorporates her little animal pals in her baby updates. Like on Sept. 12, when she and Powell cuddled a koala bear and a kangaroo joey while letting their followers know they planned to "teach our little one about the importance of protecting our planet and the beauty of the wildlife and wild places we love so much."

Irwin's little girl is going to be one lucky kid. Not only is she going to grow up surrounded by just all the animals, her parents are already making it their responsibility to ensure those animals are protected.