I've ordered from dresslily multiple times now and have been happy everytime!
I love that they have a plus sized section, plus plenty of unique and goth styled pieces. Everything I've ordered has been pretty true to size, make sure to look at reviews!
They frequently have sales which makes their awesome pricing even better.
For the price, the quality of the items is pretty nice and every piece comes in a very nice, branded, zip lock type bag.
This is one of my favorite online stores to order from