Following their fun-filled day, the 17-year-old wildlife conservationist took to Instagram to share a snap of her holding hands with Powell and her mother, Terri Irwin.
"This photo makes me so happy," she wrote. "Taken by my gorgeous little brother [Robert], of my beautiful Mum and amazing boyfriend. Family honestly means everything. How blessed am I? Here's to a lifetime more of holding hands and skipping down hallways with those that you love."