I order from Zulilly a lot and generally, I would say I am happy with the service. There has only been one instance, so far, where I was sent the wrong item. I decided to still keep it and avoid the hassle of returning it because honestly I liked it and it was similar to what I had wanted anyway. One time, I ordered a Stephen Joseph backpack for my daughter's birthday. I'm so glad I decided to order it way in advance (at least two months) because it was by far the longest order to be filled. They did send an apology that expressed a commitment to better service with my order, which I appreciated.
Aside from those two hiccups, as I stated, I am generally happy with my purchases. I like Zulily because I can get non-GMO cotton/organic clothing at a discounted price than what they sell for. Also, it has opened my eyes to companies I have never heard of and now like to keep an eye out for. When I do make purchases, I always remember to order in advance of whatever season I am wanting to order for. That way I am not disappointed by the long shipping times as they are a flash sale/warehouse site.