I pretty much exclusively shop from this site. I usually only buy items that already have ratings on them. Usually in the ratings, people of all different shapes and sizes will state whether the item fit them and how good the quality is. I find that the reviews are fairly accurate. Occasionally, the shipping will take a while, but when the store is low on stock and waiting or when their stock has run out, they send you an email and automatically refund that item.
The site often has sales, which are wonderful! There is also a spot that you can save items that you liked for later. The site also provides measurements (in cm, but there's a cm to in conversion) for their different sizes, which I also find are fairly accurate.
Overall, I love, love the site. As long as you shop around within the site and do your research, you'll usually end up with decent products and adorable, unique clothes!