How to Deal With Open-Ended Concert Attire

1. Go to Target, Macy's and other common stores. They will sell concertable clothing at low prices and a decent quality. Their clothing items are more often than not comfortable, easy to maintain, and look good. 
2. Look in department stores. If you want to make a larger investment, go to a department store. Their clothing items look better, but are more expensive and harder to maintain. However, your increase in professionalism may very well be worth the cost.
3. Go to Ross, Stein Mart, and other overstock or wholesale stores. Overstock and wholesale stores sell designer and department store clothes, but without the brand name. These stores will occasionally sell concertable items and tend to be very hit-or-miss. In my experience, I have not found concertable clothing at these stores.
4. Look online. If you do not like what is locally available and you have the time, look online for whatever you need. Double-check the sizing and read the reviews so you do not end up getting ripped off. I found my American Rag blouse online and love it. 
• If you are a lolita, you're in luck. Lolita blouses are generally very concertable.
5. Piece together your outfit. Just because you have two good pieces does not mean they will look good together. Coordinate your outfit to flatter your body type and personality. One of the benefits of open-ended concert attire is the ability to individualize your appearance to a greater extent than a specific uniform allows.

Concertable: Resembling what is typically worn as concert attire without being marketed as such, much like "loliable" among lolitas.