• A fashion designer conceives garment combinations of line, proportion, color, and texture. While sewing and pattern-making skills are beneficial, they are not a pre-requisite of successful fashion design. Most fashion designers are formally trained or apprenticed.
• A technical designer works with the design team and the factories overseas to ensure correct garment construction, appropriate fabric choices and a good fit. The technical designer fits the garment samples on a fit model, and decides which fit and construction changes to make before mass-producing the garment.
• A pattern maker (or pattern cutter) drafts the shapes and sizes of a garment's pieces. This may be done manually with paper and measuring tools or by using a CAD computer software program. Another method is to drape fabric directly onto a dress form. The resulting pattern pieces can be constructed to produce the intended design of the garment and required size. Formal training is usually required for working as a pattern marker.
• A tailor makes custom designed garments made to the client's measure; especially suits (coat and trousers, jacket and skirt, et cetera). Tailors usually undergo an apprenticeship or other formal training
• A textile designer designs fabric weaves and prints for clothes and furnishings. Most textile designers are formally trained as apprentices and in school.
• A stylist co-ordinates the clothes, jewelry, and accessories used in fashion photography and catwalk presentations. A stylist may also work with an individual client to design a coordinated wardrobe of garments. Many stylists are trained in fashion design, the history of fashion, and historical costume, and have a high level of expertise in the current fashion market and future market trends. However, some simply have a strong aesthetic sense for pulling great looks together.
• A fashion buyer selects and buys the mix of clothing available in retail shops, department stores, and chain stores. Most fashion buyers are trained in business and/or fashion studies.
• A seamstress sews ready-to-wear or mass-produced clothing by hand or with a sewing machine, either in a garment shop or as a sewing machine operator in a factory. She (or he) may not have the skills to make (design and cut) the garments, or to fit them on a model.
• A teacher of fashion design teaches the art and craft of fashion design in art or fashion school.
• A custom clothier makes custom-made garments to order, for a given customer.
• A dressmaker specializes in custom-made women's clothes: day, cocktail, and evening dresses, business clothes and suits, trousseaus, sports clothes, and lingerie.
• An illustrator draws and paints clothing designs for commercial use.
• A fashion forecaster predicts what colours, styles and shapes will be popular ("on-trend") before the garments are on sale in stores.
• A model wears and displays clothes at fashion shows and in photographs.
• A fit model aids the fashion designer by wearing and commenting on the fit of clothes during their design and pre-manufacture. Fit models need to be a particular size for this purpose.
• A fashion journalist writes fashion articles describing the garments presented or fashion trends, for magazines or newspapers.
  
• An alterations specialist (alterationist) adjusts the fit of completed garments, usually ready-to-wear, and sometimes re-styles them.
• An image consultant, wardrobe consultant or fashion advisor recommends styles and colors that are flattering to the client.

NOTE: despite tailors altering garments to fit the client, not all alterationists are tailors.