dress up vs frou-frou

dress up

verb
  • To put on special or fancy clothes. 

  • To put on a costume portraying oneself as a particular type of character or well-known person. 

  • To present in a favorable light. 

  • To decorate; to prettify. 

  • To put a costume on (someone) portraying them as a particular type of character or well-known person. 

frou-frou

verb
  • To move with the sound of rustling dresses. 

adj
  • Liable to create the sound of rustling cloth, similar to 19th-century dresses. 

  • Unimportant, silly, useless. 

  • Highly ornamented, overly elaborate; excessively girly. 

noun
  • A rustling sound, particularly the rustling of a large silk dress. 

How often have the words dress up and frou-frou occurred in a corpus of books? (source: Google Ngram Viewer )