I ordered the equivalent of a UK size 14 (same as an Australian 14 too I believe) - the XL is absolutely enormous and I really wish I’d sized down to a large, or even a medium?! Unfortunately they don’t let you exchange sizes and the return costs a fortune so now I’m stuck with a brand new dress, still with tags on that I can’t wear. For £135 I’m really disappointed with their process for returning something for a smaller size as this should be possible.