Jessica Simpson is cozying up for the winter with some new “hot chocolate brunette” hair.

The “With You” singer, 45, recently bid farewell to her signature long blond locks in favor of a darker hue. Simpson worked with her longtime colorist, Rita Hazan , to execute the transformation.

She debuted the striking hair change on Instagram with a video teasing this Sunday’s Foxwoods Casino concert in Connecticut. In the post, Simpson is pictured wearing a pair of distressed black jeans, an animal-print jacket and chunky platform combat boots with her backup vocalists and drummer in the background.

People spoke with the celebrity colorist , who christened the shade with the festive name. “For years, we kept different variations of either blond or very blond. Just recently, I took her dirt

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