off-the-shelf vs ready-to-wear

off-the-shelf

adj
  • As purchased or as commonly available, without modification or customization. 

ready-to-wear

adj
  • Describing apparel that does not need any tailoring (for example hemming) before it can be worn. 

How often have the words off-the-shelf and ready-to-wear occurred in a corpus of books? (source: Google Ngram Viewer )