In its classic sense, "classics", when used as a singular noun, means the study of the language, literature, history, art, and other aspects of ancient Greece and Rome. As a plural noun "classics" are books written in ancient Greece and Rome.
... to the hips. Rayon stockings were worn over garter belts[?]. Skirts rose to just below the knee by 1927, allowing flashes of knee to be seen when a flapper danced or ...