>>8688737A good place to start is by checking taobao sites because they usually do custom sizing. In fact, most indie brands are willing to do that if you ask them.
Here's a list of taobao stores:
http://lolita-tips.tumblr.com/post/31378489567/a-list-of-lolita-taobao-shopsAlso, I'm not sure how new you are to lolita so I'm not trying to sound condescending, but a ton of brands make dresses that can accommodate some plus-size lolitas. Make sure you know your measurements and always check those for each individual dress. If you can find dresses with shirring, do that.
