Meet the woman behind Bernie Sanders' famous mittens

The image of Vermont Senator Bernie Sanders at Joe Biden's inauguration, looking glum and wearing woollen mittens, has gone viral on social media.

They were made by Vermont woman Jen Ellis, who has since received thousands of orders for the same mittens.

She told Katty Kay and Christian Fraser about the whirlwind past week, and the special mittens she's making to auction off for charity.

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