Robert Irwin pays tribute to sister Bindi as she prepares to give birth

‘I can’t believe she’s about to be a mum’: Robert Irwin shares a touching tribute to his ‘amazing’ sister Bindi days before she’s set to give birth to her first child with Chandler Powell

Robert Irwin has paid tribute to his ‘caring and protective’ older sister Bindi, as she prepares to give birth later this month.

The wildlife warrior, 17, shared a picture with his sibling on Tuesday to celebrate International Women’s Day, where he branded her the ‘most amazing sister ever’.

He wrote: ‘I can’t believe she’s about to be a mum! Woah! Since I was super little, Bindi’s always been such a caring and protective big sister and I know she is going to be such an incredible mother to this new little baby girl.

‘Amazing sister’: Robert Irwin has paid tribute to his ‘caring and protective’ older sister Bindi, as she prepares to give birth later this month

‘Today, on #InternationalWomensDay I’m thinking about how awesome it’s going to be for another strong and determined woman to enter the world.

‘She’ll get such an incredible role model to learn from in Bindi!’

Bindi, 22, sweetly responded to the post with: ‘This made my day. Love you so much! Incredibly lucky to be your sister.’

Bindi and Chandler announced their baby news in August, and revealed the following month they were expecting a daughter. 

Baby joy! Bindi and Chandler announced their pregnancy news in August, and revealed the following month they were expecting a daughter

Baby joy! Bindi and Chandler announced their pregnancy news in August, and revealed the following month they were expecting a daughter

Cute: Bindi, 22, sweetly responded to the post with: 'This made my day. Love you so much! Incredibly lucky to be your sister'

Cute: Bindi, 22, sweetly responded to the post with: ‘This made my day. Love you so much! Incredibly lucky to be your sister’

Last week, Bindi released a book about the legacy of her family business, Australia Zoo.

She announced the publication of her new book, Creating a Conservation Legacy, on Friday in an Instagram post.

In a photo shared to Instagram, Bindi posed alongside mother Terri and brother Robert as well as husband Chandler Powell, 24, each holding up the book, which retails for $49.95.

Book it! Bindi Irwin has released a book called Creating a Conservation Legacy. In a photo shared to Instagram on Friday, Bindi posed alongside mother Terri brother Robert and husband Chandler Powell, each holding up the book, which retails for $49.95. All pictured

Book it! Bindi Irwin has released a book called Creating a Conservation Legacy. In a photo shared to Instagram on Friday, Bindi posed alongside mother Terri brother Robert and husband Chandler Powell, each holding up the book, which retails for $49.95. All pictured 

She wrote: ‘This #WorldBookDay I’m proud to share a special project that I worked on for about 5 years.

‘Creating a Conservation Legacy is available for shipping worldwide at the link in my bio. Grateful to share our journey with you.’

Husband Chandler was quick to encourage fans to buy the book, while sharing a tribute to his beloved wife.

Alongside a photo of Bindi with the tome, he wrote: ‘Be sure to grab a copy of @bindisueirwin’s book because it’s amazing, I love her, and she’s my wife.’

Sweet: Husband Chandler was quick to encourage fans to buy the book, while sharing a tribute to his beloved wife. He wrote: 'Be sure to grab a copy of @bindisueirwin's book because it's amazing, I love her, and she's my wife'

Sweet: Husband Chandler was quick to encourage fans to buy the book, while sharing a tribute to his beloved wife. He wrote: ‘Be sure to grab a copy of @bindisueirwin’s book because it’s amazing, I love her, and she’s my wife’