The size you selected is an XS which is approximately an AU size 6-8, a US size 2-4, and a UK size 6-8
The size you selected is an S which is approximately an AU size 8-10, a US size 4-6, and a UK size 8-10
The size you selected is an M which is approximately an AU size 10-12, a US size 6-8, and a UK size 10-12
The size you selected is an L which is approximately an AU size 12-14, a US size 8-10, and a UK size 12-14
The size you selected is an XL which is approximately an AU size 14-16, a US size 10-12, and a UK size 14-16
The size you selected is an XXL which is approximately an AU size 16-18, a US size 12-14, and a UK size 14-16