The trick to staying toasty post-workout this season? Make like Rosie Huntington-Whiteley and throw a chunky knit infinity scarf around your neck to nip the cold (while still showing off your abs).

New Yorkers don't need winter as an excuse to dress in head-to-toe black. Montreal-based Lena Antonacci, author of the blog Quality Rivets, brought her own interpretation to the monochromatic look with varying shades of blue. Though it's not a look we would think to try, she totally makes it work. The cherry (or should we say blueberry?) on top: layering this navy blue cable-knit scarf over a similarly hued navy wool pea coat.