Yikes. I would not recommend that website. NONE of it is lolita at all.
Have you tried Bodyline? They have a plus size line called "queen size". In the Starlight also does larger sizes.
~Batgirl (Stephanie Brown)
~Clash - Jem and the Holograms
~Operetta - Monster High
~Princess Zelda - Legend of Zelda: Skyward Sword
~Madoka Kaname school uniform - Puella Magi Madoka Magica