Denim is more rigid so would order one size up than the Lucia Jeans.
Measurements:
Size 6: Waist 69cm / Hip 90cm
Size 8: Waist 72cm / Hip 93cm
Size 10: Waist 75cm / Hip 96cm
Size 12: Waist 78cm / Hip 99cm
Size 14: Waist 81cm / Hip 102cm
Size 16: Waist 84cm / Hip 105cm
Amber is wearing a size 6.
Recommend washing in cold water inside out. Fading will occur with repeated washing.