Fanplusfriend (a.k.a F+F, Fanplusfriend Garden) is a Lolita brand based in China that sells worldwide. They are known to carry various garments for plenty of styles, especially for Steampunk, Gothic and Classic. The carry their Lolita fashion items with a brand name of "Neo-Ludwig".
They make both standard sizes and have an option to have things custom made to you, which gives it popularity among those who cannot fit other brands for various reasons. They also sell costumes, which is mostly kept to another store for cosplay.