Upturned collar
An upturned collar (or popped collar) is an otherwise flat, protruding collar of either a shirt, jacket, or coat that has been turned upward.
History
Origins
Before the early 20th century, most shirt collars were turned up in some manner. Men and women alike wore tall, stiff collars (as much as three inches tall), not unlike a taller version of a clerical collar, made either of starched linen, cotton, or lace. The writer H. G. Wells remarked in his 1902 book Kipps that these "made [the] neck quite sore and left a red mark under [the] ears." Between the late 19th and mid-20th centuries, men's collars were often detachable from their shirts, connected only by two removable collar studs (one in front and one in back). Detachable collars were very stiff, and either stood straight up (as in a Hamilton collar) or were pressed over at an ironed-in, starched crease (as in a Fremont collar). After World War II, mass-production gradually phased out detachable collars from ordinary dress shirts. Occasionally, one can still find detachable collar formal shirts, designed to be worn with a tuxedo or evening dress.