A Queensland great-grandma proved that age is just a number when she skydived to celebrate her 93rd birthday, setting an example of how to live life to the fullest.Dion Cottrell from Gold Coast Skydive, in Kirra Beach, told Storyful that Betty Gregory chose their company to mark this milestone, and remarkably, it was her fourth skydive.When asked how the experience was, Gregory said, “Excellent,” adding that she plans to return next year for her fifth jump.“What an absolute legend, proving that age is just a number. Love your adventurous spirit, Betty!” Gold Coast Skydive wrote on Facebook. Credit: Dion Cottrell via Storyful