And there was a very special significance to where he proposed.

Bindi Irwin has announced she has gotten engaged to her boyfriend, Chandler Powell. The 21-year-old took to Instagram on Thursday to share the happy news. She said:

"On my birthday I said ‘yes’ and ‘forever’ to the love of my life. "Chandler, close to 6 years ago I fell in love with you and every day since has been a whirlwind of adventure and true happiness. "I’m so looking forwarding to spending our forever together as your wife. Here’s to a lifetime of friendship, purpose and unconditional love. — Now let’s get married already!"

She explained in the comments underneath the post that her ring is made with recycled rose gold metal, and features a lab-grown diamond. She said:

"Chandler was incredibly thoughtful when he chose it. The ring captures the essence of who I am (with its vintage flare) and our life together, with the twisted band and scattered diamonds."

Chandler also took to Instagram to share the happy news, recalling how he "immediately fell head over heels" for his now-fiancée when they met six years ago. He also revealed that he has proposed at Australia Zoo, in her "very favourite place". He said:

"Almost 6 years ago we met at Australia Zoo. "I immediately fell head over heels for her kind and thoughtful heart that radiates so much light. "Proposing in her very favorite place in the zoo, surrounded by animals, seemed like the perfect way to embark on this incredible new chapter in our lives. Bee, I love you more than anything in this world and I always will. Happy Birthday."

Photo via Instagram @bindisueirwin.