suspender belt vs waspie

suspender belt

noun
  • An item of women's underwear consisting of a belt to which are attached suspenders for holding up stockings. 

waspie

noun
  • A women's waist cincher or small corset, worn as underwear or over other clothes. 

How often have the words suspender belt and waspie occurred in a corpus of books? (source: Google Ngram Viewer )