Hi,
Nice day.
Sorry for the late reply.
And we are really sorry to hear that you want to return items. About returning items, our website has mentioned that the return postage should be paid by the buyer. Hope you can kindly understand. With regard to the return address, you can refer tohttp://www.shein.com/Return-Policy-a-281.html.
If you need further assistance, please contact us via dispute@sheinside.com.
Thank you for your support.
Best wishes.

Hi,
If you are in the US then you should return it to their New Jersey sorting facility. That's what they had me do when I returned my items. Make sure you keep the tracking number and track it every couple of days just so they don' try to tell you that they haven't received your return (which undoubtedly they will try to do or at least that was my experience).

Here's the full address:
Sheinside Group Inc
1980 US HIGHWAY 1 BLDG 3B
NORTH BRUNSWICK, NJ 08902 USA