out of style

out of style

No longer considered fashionable, trendy, or popular. Bell-bottom jeans went out of style decades ago, Dad. Get with the times! The film noir genre was hugely popular in the late 1940s before falling out of style.
See also: of, out, style
Farlex Dictionary of Idioms.

out of style

 and out of fashion
not fashionable; old-fashioned; obsolete. (See also go out of fashion.) John's clothes are really out of style. He doesn't care if his clothes are out of fashion.
See also: of, out, style
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • out of fashion
  • vogue
  • go out of style
  • stupid fresh
  • go out of fashion
  • so last year
  • stylin
  • uncool
  • (something) is the new (something)
  • is the new...