teri agins (1)

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First Lady Michelle Obama wears her signature cardigan while dancing with performers from the television show So You Can Dance during the annual White House Easter Egg Roll on April 6, 2015.
Mark Wilson/Getty Images

Ah, the cardigan: your granny’s cozy go-to used to be available year-round, but in limited quantities and colors. It was considered the sartorial equivalent of flossing: necessary, but not glamorous. 

“The cardigan used to be something to keep you warm in the work place,” explains T

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