Yes, the website looks pretty and the prices 'seem' great, but beware!
I ordered six items and over a period of three weeks received a weekly email cancelling an item. Refunds were given, but that's not the point.
In the end I received three small items and it took over a month to get them. I'm in Australia, not a third-world country and have been successfully shopping online for many years.
This is my first and last experience with Zulily. There are many more players in the market who do it well and get it right first time.