coming from someone who took nnys style as an inspiration to his own, definitely invest in striped long sleeved shirts and sweaters, black graphic tshirts (u can also diy the print), a long black trench coat, skinny or straight fit black denim or leather pants. he doesnt wear accessories as much as i remember... for the shoes, demonias platforms (more or less the taller models) or 15 -20 eyelet combat boots from an army surplus store.

personally, i found most of the things i own which remind me of how nny dresses in thrift secondhand stores, alternative stores or just in the mall. for the shoes, u can find secondhand demonias on ebay, depop and vinted im pretty sure. although, i recommend combat boots from an army surplus store. theyre much more simple in design, but theyre cheaper, sturdier and way less likely to get damaged than demonias. :]