For a limited time, Asos has 20% off over 1,000 best sellers across their site.
Full list: https://www.asos.com/au/women/ctas/coded-promos/promo-1/cat/
Some of these styles are already on sale which brings the total discount to up to 75% off in some cases.
There are plenty of under $10 items to help you get to free shipping minimum.
Limited time only, no code is required.