That's a really good question.

Part of it could be simply that Sony is a behemoth of a corporation, and the people in charge of the matter now had no input to the original decision to make the model realistic.

Given that there were multiple stories before the release about how the devs were so proud of the detail on the model, perhaps they simply went a bit overboard, or they wanted to make clothes fit as realistically as possible and didn't have the foresight to realize someone would find out.