Is there anything more impossibly chic and more fall-y than a red plaid blazer? It reminds me of a Gossip Girl fashion look. For the colder days, I suggest a cozy sweater under this plaid blazer that has shoulder pads and pockets. It's such an easy go-to for work or any casual occasion. If you wear it with a white sweater it will make this red blazer pop while still looking professional and understated.