After Bindi Irwin announced her pregnancy earlier on this week, mum Terri has taken to Twitter to share a heartfelt message.
"This is the best day ever!" she wrote. "I am over the moon to announce that Bindi and Chandler are going to have a baby!"
"Words cannot express the love that is filling my heart. While I wish that Steve was here to share this beautiful moment, I know that he would be so proud."
She wasn't the only member of the Irwin family to share their joy online, little brother Robert did the same.
"The most exciting news ever! I am so happy for Bindi and Chandler to be welcoming a new member of the family." he wrote.
"I can’t believe I’m going to be an uncle!!! It’s such a happy time for our family - I look forward to this brilliant new chapter and all the fun adventures ahead with a new little Wildlife Warrior!"
Such exciting news for the entire family - they'll make great parents!