The purpose of theme names for fashion shows is to showcase a particular designer's style, provide marketing hype for the event and entice both buyers and investors to attend. Designers often focus on a particular look or color for a season, and the theme conveys the designers' message.
Since fashion is a form of art in the eyes of most designers, many of them intertwine beautiful clothing with a message of significance aimed at society as a whole. This type of symbolism can address issues like animal cruelty and equality for women in fashion. Other themes are intended to showcase romance, innocence and eras long gone.