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October often proves to be a challenging month for our wardrobes. Though the temperatures have dropped, heavy outerwear isn't a total necessity yet, but it is nippy enough to need an extra layer. Lucky for us, some of our favorite celebs and designers have solved our transitional weather dilemma by adopting a very smart option: the oversized vest. Click through to find out how to incorporate this piece into your autumn ensemble with examples from the fall runways, stylish starlets, and a street-style favorite!