If you buy the wrong size you're screwed. After contact their sales representative after scouring their site for returns policies and procedures, I was told "I'm more than happy to give you more information about our return policy. While we are a final sale site and items are not eligible for returns. We want you to love everything you order on zulily. If youre not delighted with your purchase, we do expect a few returns on a case by case base. When we take a returns we will do that refund in store credit that way you have a chance to find something that you will love!"
So bad English suggests that they will not, on a case by case basis, accept that SIZE ISSUES FOR CLOTHING BOUGHT ONLINE is NOT an ACCEPTABLE reason to return or exchange items.
No wonder AMAZON is the only place online to buy clothing.