There will be around 250 competitors from around the world at the championships.
The Blackstacks will be looking to build on their efforts from the 2014 world champs where they won four trophies and 26 medals.
Jasmine and Allanah will be doubles partners at the event, which involves working together with each person using only one hand to stack.
The individual competitions involve getting the cups up in various pyramid combinations such as 3-3-3 and 3-6-3, then bringing them back down in the fastest time possible.
Jasmine and Allanah had been chosen for last year's Junior Blackstacks trip to Taiwan for the Asia championships, before the tour was cancelled.