Size Waist Hip Inseam AU/UK/NZ US
XS 61-66 81-86 60 4-6 2-4
S 67-72 87-92 61 8 6
M 73-78 93-98 61 10 8
L 79-84 99-104 62 12 10

All measurements are in cm.
Nicola is 168cm, AU 6; wears size XS.