He is doting uncle to his sister Bindi Irwin's adorable daughter Grace Warrior.
And Robert Irwin paid tribute to his beloved niece as she turned six months old over the weekend.
Award winning wildlife photographer Robert posted several sweet pictures of baby Grace grabbing his face and staring lovingly into his eyes.
So sweet! Robert Irwin has paid tribute to his beloved niece Grace Warrior as she turned six months old over the weekend
'Grace Warrior letting me know that she’s 6 months old! Happy half birthday to my little niece,' he wrote in the caption.
In the images, Grace looks adorable dressed in a spotted onesie and a tiny floral cap.
Meanwhile, Robert is clad in his signature khaki Australia Zoo uniform.
Aww: Award-winning wildlife photographer Robert posted several sweet pictures of baby Grace grabbing his face and staring lovingly into his eyes
The post comes after the young bub's famous parents - Chandler Powell and Bindi Irwin - shared their own tributes to their daughter to their separate Instagram accounts.
Bindi, 23, posted a series of photos of young Grace sitting in a field and smiling with a specially designed 'six months' place card in her hands.
'Six months old! Grace Warrior, we love you beyond description,' Bindi wrote in her post.
'Grace Warrior letting me know that she’s 6 months old! Happy half birthday to my little niece,' he wrote in the caption
Special: The post comes after the young bub's famous parents - Chandler Powell and Bindi Irwin - shared their own tributes to their daughter to their separate Instagram accounts
Her husband Chandler, 24,
