There are some items that you know will sell out almost instantly. This summer, that's mainly polka-dot dresses and green floral midis. However, ASOS just released a niche item that our team truly didn't see coming (and we are very good at predicting these things, if we do say so ourselves). ASOS informed me of a knitted cardigan and matching top (complete with a love logo) that sold out within just one week—something that I think was probably a surprise to them. These knitted sets are now a key micro-trend for the e-tailer, and ASOS says there will be plenty more knitted cardi and skirt sets coming in June.