When in doubt, throw on a pair of floral pants and the warmest sweater you own. Then close your eyes and pretend it's actually warm out (it's not). Not super effective but a pop of something spring-like can do wonders for a warm weathered girl's sanity.
{H&M sweater (old); Ralph Lauren top (similar, similar); Forever 21 pants (different color here); Plenty by Tracy Reese heels; Michael Kors bag; Snap Happy nails by Essie}