Bindi Irwin has gotten engaged to her boyfriend, Chandler Powell, on her 21st birthday.

"On my birthday I said 'yes' and 'forever; to the love of my life," the Animal Planet star wrote on Instagram on Wednesday alongside photos of herself displaying her engagement ring next to Powell.

"Chandler, close to six years ago I feel in love with you and every day since has been a whirlwind of adventure and true happiness," the conservationist continued.

"I'm so looking forward 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!"

Powell, 22, also uploaded engagement photos to Instagram.

"Almost six years ago we met at Australia Zoo. I immediately fell head over heels for her kind and thoughtful heart that radiates so much light," the professional wakeboarder said.

"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," he continued.

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Irwin is the daughter of late "The Crocodile Hunter" star Steve Irwin.

She previously appeared on Season 21 of ABC's "Dancing with the Stars" and currently appears on Animal Planet's "Crikey! It's the Irwins" alongside her mother Terri and brother Robert.