I got all the pieces in my wardrobe yet it didn't give me the achievement. Did I go about it wrong it?

Did you go to your achievements page and find said achievement? You need to pretty much have to toggle that (show items) then go to another page to trigger the achievement.

Hope that made sense.

I was on the achievements page and viewed items there and even clicked the box next to it then went to wardrobe and put on the items. Yet nothing. Thank you for commenting.

Ah OK you may just need to wait a few minutes for the cache. :)

Alright thank you so much. And thank you so much for the Mother Mallarchy Plushie. ^-^