I'm 6'1 and started out at 180 and doubled to 360 (ugh) with Anime Boobs by the end. Motherhood is where I got all my clothes.
((I actually shop the maternity section regularly for shirts even though I'm close to my original weight (being tall means most shirts, even "tall" shirts from normal stores are belly shirts on me, but maternity shirts are mostly just *longer* huzzah, so I can stand up straight without fear of the dreaded navel flash). It's amazing to me, but you're right, along with the 'skinny' jean craze a lot of clothes, even maternity clothes have gone 'skinny'. Um. Who are they selling these to again? It's going to be hit or miss even from just a year ago.))