The result follows an impressive season for Coady, were she made her World Cup and World Championship debuts, highlighted by two sixth place performances against world class senior competition.
Coady headed into the event full of confidence, with one of her sixth place World Cup performances taking place on the same course in Spindleruv Mlyn a week earlier.
"It will be good to ride an already familiar course again, as there were three more days to practice on it so plenty of time to change up and add things into my run,” said Coady before the Junior World Championships.
Coady qualified for Slopestyle finals in first place, and was able to carry her form all the way to the top of the podium clinching the women's crown by virtue of a score of 94.25, ahead of Japan’s Reira Iwabuchi and Finland's Elli Pikkujamsa, silver and bronze medallists respectively.
In the Big Air, Coady came into the concluding day of the event in the Czech resort full of confidence following her slopestyle triumph and she reigned supreme once again with a score of 167.25 points.
The Big Air podium was an exact replica of the previous day's slopestyle competition as Japan’s Reira Iwabuchi and Finland's Elli Pikkujamsa again taking silver and bronze.
Coady was obviously excited with winning double gold after the event.
"I didn’t expect that at all, two gold medals in two days, I am really stoked."
In winning gold, Coady joined Australian Figure Skating pair Harley Windsor and Ekaterina Alexandrovskaya as Australian Junior World Champions in 2016-2017.
IMAGE: Tess Coady with her gold medal © Czech Snowboarding