To find your best fit, please lay your favourite similar piece of clothing down and measure your the following lengths in CM to find your best fit.

Tip: Don't have a ruler? Use the 'Measure' app on your iPhone.  
Size S M L
AU Size 8 10 12
US Size 4 6 8
Waist (CM) 28 30.5 33
Hip (CM) 33.5 36 38.5
Length (CM) 84 85 86
*1-2cm difference is to be expected.