Fashion, a general term for a currently popular style or practice, especially in clothing, foot wear, or accessories. Fashion references to anything that is the current trend in look and dress up of a person. The more technical term, costume, has become so linked in the public eye with the term "fashion" that the more general term "costume" has in popular use mostly been relegated to special senses like fancy dress or masquerade wear, while the term "fashion" means clothing generally, and the study of it.