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Wear Something in an Unexpected Way
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It doesn't have to be a huge statement like wearing a jacket backwards; subtle alterations pack the chicest punch. For example, take a basic man's white shirt (slightly oversized), unbutton it, wrap it so that one side overlaps the over and tuck in.) Another way to look sexy is to take a cue from Scarlett Johansson and wear menswear. A tuxedo on a woman -- either worn literally with a shirt and bowtie or with a feminine cami -- is super sexy.