Steve Irwin's daughter Bindi Sue Irwin gave birth to her first child from Chandler Powell on Thursday. Steve Irwin's son is an exact copy of that of his father in the photo with his newborn niece, published by 17-year-old Robert on Instagram.
"Let the adventures of uncle begin!", - signed a snapshot of Robert, in which he holds the baby on his Instagram on Friday morning.
The photo almost accurately mirrored the one Robert shared back in July when he celebrated his sister's 22nd birthday, in which Steve gazed lovingly at his then-newborn son while Bindi posed next to the couple.
Steve died on a diving expedition off the coast of Australia in September 2006 at the age of 44.
In announcing the baby's birth on Friday, Bindi shared the meaning behind her daughter's name.
“Our graceful warrior is the most beautiful light,” Bindi wrote on Instagram. "Grace is named after my great-grandmother and relatives in the Chandler family dating back to the 1700s."