What is the term for clothing sold in retail stores that has not been custom tailored?

The correct term for clothing sold in retail stores that has not been custom tailored is "ready-to-wear." This designation refers to garments that are mass-produced in standardized sizes, which allows them to be sold directly off the racks without the need for customization.

"Ready-to-wear" garments cater to a broad audience, providing convenience and accessibility within the fashion marketplace. This approach contrasts with bespoke or custom-made clothing, which is specifically tailored for an individual buyer, signifying a clear distinction in the types of offerings available in retail environments.

While "prêt-a-porter" is a French phrase that translates to "ready-to-wear" and is often used interchangeably in the fashion industry, it is not the term widely recognized in more casual retail spaces. "Private label" refers to products branded for sale by a particular retailer, but it does not inherently imply anything about the tailoring of the clothing. "Custom fit" typically suggests that the clothing has been tailored or designed to fit individual measurements, which does not align with mass-produced items.