I've shopped on Yesstyle since 2012 and I always come back there. One of the reason I love to shop there is because the clothes are unique, since I don't like wearing the same as others. I also happen to be petite so it is easier for me to find clothes that looks flattering. In addition they often have sale on clothes, even high end brands, so I don't need to shop on their official sites since high end brands rarely give discounts. The reason I didn't give many stars is because sometimes the information of the material could be wrong, and there have been cases of some the outfits I received turned out to be made of poor quality. That's why it's important to read reviews, details and check the photos closely. This makes everything time consuming (believe it or not, I use 3 days to make a haul there) because I need to make sure I don't get cheap china quality clothing.
BE AWARE THOUGH: Believe it or not, sometimes Yesstyle makes their own imaginary brand (e.g. Sakana, Daisyfield) and under these ''brands'' they'll sell Chinese cheap quality clothes which is from Taobao (all the ''brands'' happens to be from China too, you can safely buy brands from Korea/Japan since they can't lie about it). They also blurr the Taobao seller's shop link, so I would avoid buying clothes with blurred watermarks.
Although I believe YS stopped selling fake highend brands, I'd remember few years ago that they sold fake Liz lisa boots under a random Chinese brand.
It's basically a risk to shop there, so the best is to buy brands that is from Korea and Japan (Hong Kong brands like 59seconds is also okay. But I would avoid *mainland* Chinese brands)