Before purchasing from Sheinside, I've read tons of negative reviews about this website, usually missing packages, the customer service doesn't reply, and the items being of poor quality. I was a bit apprehensive to purchase, but my sister ordered from them with no issues, other than having to alter some of the clothes slightly to fit better, so I decided to order from them.
The clothes are all pretty cheap, and before purchasing I checked the reviews on the items to see what the items were really like. I bought 4 items and they are all of decent quality, just that the sizing is a bit odd. Just remember to check the measurements before purchasing, because the fit may not be the same for different items.
Shipping took quite a while, over a week if I remember correctly. But my experience was pretty alright, and I may purchase again. I may have just been lucky, because the bulk of reviews online have been negative.