Akane and Alois
Dream of Lolita
Surface Spell Gothic (please note that their sister shop, Surface Spell, does NOT offer custom sizing)
If you know of any TaoBao shops not on this list that offer custom sizing, let me know (please note that I have purposely excluded any shops that use stolen photos or that appear untrustworthy or low quality). Also, if you feel that any of the above shops were mislabeled and do NOT actually offer custom sizing, let me know that as well so I can remove them from the list =).
Also, TaoBao shopping services:
(there are many TaoBao shopping services out there, including some not listed here, just choose whichever one works best for you =) )