I've had this flow-y bling bling shirt for going on four years now. Of course I bought it from Forever 21, and it was most likely a steal. But this is the best example of a great piece of clothing, because I can wear it to all types of occasions casual or fancy. Something so simple yet elegant at the same time is definitely something that will earn its keep in my closet far longer then just a ordinary piece.
My piece of advice : When shopping, keep an eye out for pieces that you can imagine wearing with Jeans as well as slacks or nice pants. With a light sweater, or even with a blazer. Keep your options open :)