Fashion loves hybrids—jeans as tight as leggings! shorts that look like a skirt!—and fashionspeak loves hybrid descriptors, also known as portmanteaus. Thus: jeggings (first use in print: 2009) and skort (1951), not to mention athleisure (1995), flatforms (2010?), and cardi-coat (date unknown). (More fashmanteaus here.) This year we’ve been hearing a lot about the shacket (“the cutest way to stay comfortable in between seasons”—Stylecaster; “a must-have”--Narcity), a blend of shirt and jacket that sounds like it ought to describe a petite shack. It’s newly trendy but not really new at all.