I've ordered from Shein 5 times now, it's taken 6- 12 days for delivery to UK. Each item has its own size chart and reviews and using these as guidance have ordered size 0XL to 4XL. Everything I have ordered has fit me and has been an absolute bargain, I have returned 2 items that didn't suit me which Shein put money onto my account without needing to send it back ( I paid for postal insurance at time of purchase which also makes returns easier). The quality is like any other fast fashion highstreet store, tends to be synthetic material and there may be a loose thread ( this has happened once on a hem with me) but I've never paid more than £18 for an item and that was a pair of jeans which are my favourite pair now. I really recommend anyone ordering takes the time to read the reviews, measure yourself and follow the size chart, its great that Shein takes the time to measure each product instead of using a generic chart.