in fashion popular, trendy (Brit. informal), all the rage, hip (slang), in (informal), latest, the new, happening (informal), current, modern, cool (slang), with it (informal), usual, smart, prevailing, fashionable, stylish, chic, up-to-date, customary, genteel, in vogue, up-to-the-minute, modish, du jour (French), à la mode, voguish (informal), trendsetting, all the go (informal), culty That sort of dress is in fashion again.
Internet technology such as online retailers and social media platforms have given way for trends to be identified, marketed and sold immediately. Styles and trends are easily conveyed online to attract the trendsetters. Posts on Instagram or Facebook can easily increase awareness about new trends in fashion, which subsequently may create high demand for specific items or brands, new "buy now button" technology can link these styles with direct sales.
fashion, style, and fad mean the way that up-to-date people do things. fashion is used of any custom (as a way of dressing or behaving) that is widely accepted at any one time or place. It was once the fashion for everyone to wear hats. style may suggest a fashion that is approved of by people with taste. The house was decorated in the latest style. fad is used for something that is very popular and often only for a short time. Beach tennis may be just a fad.