"So happy for the 2 of you," Hough wrote. "Loving congratulations"
DWTS judge Carrie Ann Inaba also chimed in, writing, "Congratulations to you both!!! Wishing you a lifetime of happiness."
Two of Irwin's former competitors, Carlos and Alexa PenaVega, also shared their love and support, with Alexa writing, "Tears of joy sweet girl!!!! So so so happy for the both of you!!!!! You two so beautiful inside and out!!! Sending you SO MUCH LOVE!!!"
Host Tom Bergeron added his two cents to the slew of sweet sentiments, writing, "Congratulations to you both (he’s a lucky guy!)"
And it seems Powell knows just how lucky he is. The newly engaged professional wakeboarder commented on his fiancee's announcement post, sweetly sharing, "I love you and I’m so excited to create a lifetime of magical moments together."
"July 24th 2019… On my birthday I said ‘yes’ and ‘forever’ to the love of my life," Irwin captioned the Instagram post. "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," she added. "Here’s to a lifetime of friendship, purpose and unconditional love. — Now let’s get married already!"
ET spoke with Irwin back in May, and the famed nature lover opened up about how she feels her late father, the iconic "Crocodile Hunter" Steve Irwin, would have felt about Powell.
"I hope he'd like Chandler. I think he would," she said of her dad, who died tragically in 2006, when Irwin was just 8 years old. "I mean, Chandler's wonderful. He's always up for a challenge. From jumping on crocodiles to getting his little cocky bow tie on, you know he's doing good. So, I hope dad would love Chandler. We all love him."