There are tons of sites that you can buy authentic lolita dresses, from brand to off brand!

 

 

Off brand:

http://www.bodyline.jp.co (Lolita JSK/OP's for less than 100 USD!)

http://www.fanplusfriend.com

http://www.etsy.com (private and custom made dresses and accessories.) 

http://www.qutieland.com/ (Brand Replica dresses)

http://www.taobao.com/market/global/index_new.php

EGL (Elegant Gothic Lolita. Lolita trading, and second hand.)

 

 

Brand!/Burrando! 

http://www.angelicpretty.com/en/ (The most well known Lolita brand site in the world. Most popular with Sweet lolita.) 

http://www.babyssb.co.jp/ (Also the most well known Lolita brand site in the world.) 

https://www.metamorphose.gr.jp/ (Popular with sweet lolita.)

http://www.cdjapan.co.jp/ (Brand name Moi-meme-Moitie.)