Possible Topshop Amy AGMGTW Pants Alt
I was Lurking round Topshop, And found these http://www.topshop.com/webapp/wcs/stores/servlet/ProductDisplay?beginIndex=0&viewAllFlag=&catalogId=33057&storeId=12556&productId=5322610&langId=-1&sort_field=Relevance&categoryId=208528&parent_categoryId=203984&pageSize=20 They look quite like the ones from the episode :) Hope this helps, SOrry if this has been found before