Bindi Irwin celebrated her 18th birthday in the sweetest way.

On Sunday, July 24, the former Dancing With the Stars winner took to Instagram to share a precious throwback photo of herself with her mother, Terri Irwin, and late father, Steve Irwin — and her caption will melt your heart.

“Hello lovelies. Well today marks 18 years of life for me, here in Australia and I really don’t know where to begin in thanking so many people for an unforgettable journey so far. So I think that I’ll start here, with this photograph. This photo was taken within the first year of my life. To be perfectly honest life has changed in a million ways since this photograph was taken,” Bindi began.

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Hello lovelies. Well today marks 18 years of life for me, here in Australia and I really don't know where to begin in thanking so many people for an unforgettable journey so far. So I think that I'll start here, with this photograph. This photo was taken within the first year of my life. To be perfectly honest life has changed in a million ways since this photograph was taken. Along the way we gained another incredible part of our family, my brother Robert. Our conservation work with Wildlife Warriors took off around the world. Our home, Australia Zoo continued to expand and has become the greatest zoological facility on planet earth. Our Dad, Mum's soulmate and a superhero for us all, passed away. However, since this photo was taken, 18 years ago, one life ingredient has remained, unchanged, unbreakable. That is the unconditional love that is shared between my beautiful little family and the loyalty we have to eachother and everyone else who has taken this journey with us. I don't think that when this photo was taken even my beautiful parents could have known what life would evolve. I know that I am endlessly grateful for the love and light I have been given since Day 1 of my life.

A post shared by Bindi Irwin (@bindisueirwin) on

“Along the way we gained another incredible part of our family, my brother Robert. Our conservation work with Wildlife Warriors took off around the world. Our home, Australia Zoo, continued to expand and has become the greatest zoological facility on planet earth. Our Dad, Mum’s soulmate and a superhero for us all, passed away,” the caption continued. Steve sadly died at age 44 after being fatally stabbed by a stingray while snorkeling in Australia’s Great Barrier Reef in September 2006.

MUST SEE: Bindi Irwin Shares a Sweet Throwback Photo of Herself With Late Dad Steve Irwin — See the Pic!

“However, since this photo was taken, 18 years ago, one life ingredient has remained, unchanged, unbreakable. That is the unconditional love that is shared between my beautiful little family and the loyalty we have to each other and everyone else who has taken this journey with us. I don’t think that when this photo was taken even my beautiful parents could have known what life would evolve. I know that I am endlessly grateful for the love and light I have been given since Day 1 of my life,” she added. So sweet, Bindi!