I think I might know who you are... one of your cosplays a cat character per chance?
Going through taobao is risky at this point unless you pay through the nose for shipping, and even then it's hit and miss.
What I recommend you do at this point is go through cosplayfly on ebay and ask them to do a rush order for you, they're usually happy to oblige as a friend of mine needed one in a hurry. explain that your deadline is soon and ask that they help you with that, you should receive it within two weeks.
They do custom sizing as well and generally have a better grasp of what you want and dont have to go back and forth between the agent several times. From my experience their love live costumes are decent quality too, just always remember to stitch on anything thats been done by hand yourself otherwise you'll be losing buttons and so on.