The fit is slightly relaxed and oversized.
Size Small: 8-10 (UK and Australia), 4-6 (USA) and 36-38 (Europe)
Size Medium: 10-12 (UK and Australia), 6-8 (USA) and 38-40 (Europe)
Size Large: 14-16 (UK and Australia), 10-12 (USA) and 42-44 (Europe)
Size Extra Large: 18-20 (UK and Australia), 14-16 (USA) and 46-48 (Europe)