Size Bust Underbust AU/UK/NZ US
XS 76-82 66-72 4-6 2-4
S 83-87 73-77 8-10 6-8
M 88-92 78-82 10-12 8-10
L 93-97 83-87 12-14 10-12

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