I have a client that sells tshirts.

I"m looking for a script that will allow client to input various pieces of information from the backend (eg; color, size) and upload photos and then output some dropdown selection on the front end. Here is a mockup of what we envision.

Any good ideas? I don't want anything overly complicated. The client doesn't intend to actually sell the shirts only but simply show what he has. So no ecommerce is needed. I need to be able to skin the front end so it looks like the rest of the website as well.