The 19-year-old has been dating Chandler, 21, for nearly three years, and her latest Instagram post has fans speculating.
‘Yesterday was so much fun. Testing out our St Patrick’s Day obstacle course! Tomorrow, all our visitors to @australiazoo can compete in our annual wife-carrying competition to win their partner’s weight in golden beer! 🍀🏆
‘All you need to do to win the coveted prize is be the fastest pair to complete our St. Patrick’s Day obstacle course, your team mate doesn’t have to be your wife it can be whoever you choose as long as they are over 18! Your partner will sit on a see-saw and balance against the beer until they win their weight in beer!’
And considering it’s a ‘wife-carrying competition’, this got people talking.
Last year, it was reported that Chandler had popped the question, although Bindi’s rep denied they were engaged.
This article originally appeared on New Idea.