It looks like you have to settle for something similar...
Mary Zophres, the costume designer said in an interview, that thy made all his clothes from scratch.
"We made a
ll of Ryan’s clothes. He wore pretty much one or two trousers the whole movie, and they showed off his feet. They were learning the dance moves, so why not? He had one dress shirt, a couple casual shirts and two or three blazers, that was it. I didn't think his character was informal enough to ever wear a T-shirt."
Here is the link to the interview -
http://www.hollywoodreporter.com/ne...ner-explains-retro-realistic-look-film-951231
She mentions the shoes he is wearing. The tie looks like it´s from the 60s, maybe that helps your search...