Terri Irwin shares beautiful throwback tribute photos of Bindi Irwin for her 21st birthday

It's hard to believe, but Bindi Irwin is all grown up and turning 21-years-old TODAY!

And what would a 21st birthday be without a heartfelt message from your parents?

Taking to social media this morning, Terri Irwin shared four beautiful throwback tribute photos of a young Bindi with her famous dad, Steve Irwin, to mark the milestone.

In the caption, she wrote: "My dearest @BindiIrwin, happy 21st birthday. So many memories. Your first birthday cake, laughs with your dad, & endless family adventures."

Celebrating the big day in her iconic khaki uniform at the Australia Zoo, Bindi was gifted a hand-painted portrait of her late father, who died after being stabbed in the chest by a stingray barb.

READ MORE:
• Bindi Irwin shares an emotional post about her late father 12 years after his death
• Bindi Irwin stuns in never-before-seen throwback video of her 'Dancing With The Stars' rehearsals

It's been over 12 years since the "Crocodile Hunter" tragically died, but looking at these photos had us smiling and tearing up at the same time.

The post attracted over 10,000 likes within hours and received many comments from Steve's fans.

We’re sure Steve couldn’t be more proud of his daughter!

September will mark 13 years since Steve's passing.