yeah.. same here, my mom tells me i'm really boring with my clothing styles. she buys leopard print stuff and anything animal and i'm just the complete opposite sometimes LOL. I go for more comfort than anything! ah and I go to anime conventions and I buy lots of manga too so don't you worry c: but not as much on manga since i just read most of them online anyway~
and cosplay can count as clothes, but you can't really wear them out religiously! i know people would stare as much as you don't want them to xD but getting a tape measure is always smart when buying online, but it makes me kinda nervous too. i've bought things from china and it usually takes about 2 weeks to come in to where i am, but sometimes it ends up looking weird on me or i just don't like the style anymore so i end up donating it to a charity or something D: