friends of mine run their own collection, mostly comprising of model/silk jersey pieces that they heavily wash, overdye - you get it, distress properly - and their tees, even with constant wear and washing, won't excessively pill. it's not so amazingly difficult or expensive to work with these sort of qualities (or to find ones that stay in shape well), having done their business for a couple seasons now, the girls should have figured out how to avoid these problems... at least when you do 'high-end clever basics'.
i've actually spoken with a befriended buyer from 'a major independent retailer in new york' and she told me how badly made she finds the row's jerseys - the chain would fall off instantly and the fabric would pill all the way... apparently resulting with unhappy customers returning their pieces.
yes, what they do looks nicely finished when you see it from a far with the overall proportion and details like the easily removable composition tag and the dangling metal chain... but at the end of the day, there's not much to hide beneath when a minimalist, non-seasonal piece - especially at a high price - doesn't provide for enough quality so that you would be able to wear and wash it properly - it's not that we are talking of uber-delicate and sheer cashmere and silk knits from prada that obviously demand for extreme care here. i've ditched alexander wang maybe for a little too long but i find his approach with a very similar look and product to be a lot more sympathic than what the olsens are doing... and i believe his t-shirt line will probably take away customers from the row if it is done well... because initially, the two designers actually end up addressing the same customer, even if not intentionally.