When the wildlife expert took home the Mirror Ball trophy
for season 21 of Dancing With the Stars
on Tuesday night, the 19-year-old wakeboarder posted a pic of Bindi, her brother, and publicist on Instagram, writing, "CONGRATULATIONS @bindisueirwin !!!!! I've never seen anyone work as hard as you have and it all paid off. Three months without taking a single day off! You deserve this:) #Champion #TeamCrikey."