Size 8 AUS = 4 US. I am typically a 4-6 US and this fit great. Sizing is flexible since it’s so flowy - could probably fit a US 8. Got so many compliments on this dress! The shimmer adds an elegant element. Length is long on the sides but short in the front so you never trip over it. I’m 5’6 and didn’t have an issue walking, but the sides do touch the ground. I have boob tape on the front to keep it in place but it didn’t need it if you’d rather it just hang and show a little more cleavage.