70s fancy dress costumes

So my aunt is organizing a 70's theme party I want a costume that is cute but not over the top also a costume idea that I and my boyfriend is kind of party as a couple some idea of the places on the island costume NY no longer know please help, THANKS. After looking around, I learned – Austin Powers costumes are a good idea. Here are some of the 70 items of costumes that we send to New York as soon as possible, despite selling online, not in a physical store