What I have found is that people feel extremely happy when they create something that they like and ends up a success. For example if someone was getting dressed and they decided to wear an outfit that they had never worn before and people complimented them on it they would be happy and self confident. Once people understand that it is okay that your clothes look different from other people's and they start to enjoy looking different and/or having a "signature" style they will become a lot less stressed about how they look and won't feel as much pressure to look like everyone else. Of course it will also really give people a lot of self confidence, which is always a good thing. For all of these reasons fashion can promote creativity in everyday life.