If you thought that the most social stories of the week would be all about runway shows and street style, prepare to be surprised. This week's crop features a red carpet sweatshirt look only Jessica Alba could pull off, our foolproof plan for your most stylish Valentine's Day yet, and a game of guess who with one of our favorite street style stars. But we're only getting started — see what other stories got you buzzing here, in the gallery.
Facebook Couldn't Stop Talking About This (Almost) Unrecognizable Style Star
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