Fine feathers make fine birds (ไก่งามเพราะขน คนงามเพราะแต่ง) it means beautiful or expensive clothes may make the wearer seem more impressive than is really the case. This idiom is a good definition for fashion. Fashion is Social Psychology because the style of dress makes a decision and accept society and must be appreciated by many people interested in the same subject, and then it will be fashionable.People give meaning about different fashion clothes, shoes, accessories, and makeup. So it was not easy at the definition of the word "fashion" because it meant a wider than limit. Therefore fashion is something tangible and intangible causing joint flavor .So there will be a fashion must have the composition is acceptance in society is big or small , a model to imitate, follow the group ,and occurs and fade away in a short period