An outfit worn by all members of the same specific company or team is called a uniform.
A uniform is standardized clothing that identifies people as belonging to an organization, profession, school, military force, or sports team. It can be identical from head to toe, or simply share key features such as colors, logos, badges, or design. Companies often use uniforms to create a recognizable brand image, while teams use them to show affiliation and distinguish players from opponents.
The word “uniform” comes from the Latin roots unus, meaning “one,” and forma, meaning “form.” The idea is therefore linked to having one shared appearance. Common examples include police uniforms, school uniforms, airline outfits, restaurant clothing, military dress, and sports uniforms.
A jersey or kit is not always exactly the same as a uniform. A jersey is usually one shirt worn as part of a sports uniform, while “kit” is especially common in British football for the complete set of team clothing. Uniforms also do not always have to be perfectly identical: matching colors and identifying symbols may be enough to signal membership.