In the final challenge to determine the winner, the final three contestants must build a spectacular Carnivale style-float.

This challenge is all about creating an original street art balloon sculpture to display in one of Melbourne's most iconic laneways, Hosier Lane.

Our remaining balloon artists arrive to find the Blow Up studio transformed into an impressive jungle, filled with trees and vines. Contestants have 10 hours to create a spectacular wildlife scene.

Today's challenge is a dress making challenge, with 12 hours to make their dresses. The creations will be worn by models and walked down a catwalk in front of a live audience.

Today's challenge is over two rounds. For the first challenge, contestants must work in pairs to transform a beat up car into a balloon dream machine in six hours.

Contestants have 8 hours to create a piece worthy of being under the Big Top as the Blow Up Studio is transformed into a circus.

Inspired by the giant T-Rex skeleton that greets them, today's challenge for the 10 talented Balloon Artists is to create a prehistoric sculpture fit for a museum.

Two teams of five have 12 hours on the clock to create a balloon world with a theme of Future or Fantasy. Then, five artists from the winning team must create a floating piece of art, using helium.