ready-to-wear

US /ˌred.i.təˈwer/
UK /ˌred.i.təˈwer/
"ready-to-wear" picture
1.

clothing that is mass-produced in standard sizes and sold in finished condition, as opposed to being custom-made

:
The designer launched a new ready-to-wear collection for the spring season.
Most people buy ready-to-wear clothes rather than having them custom-made.