Jonathan Yeo's portrait of Malala Yousafzai, the schoolgirl shot by the Taliban in Pakistan for campaigning for the right of girls to receive an education, will auction for charity on May 14.
Artist Yeo is donating it into the sale at Christie's New York to raise money for the Malala Fund - which carries on her work. It is expected to make $60,000-80,000.
Malala was injured in the attack but survived and has since been nominated twice for the Nobel Peace Prize.
She commented in a statement: "I was honoured that Jonathan asked to paint me for his exhibition in the National Portrait Gallery and am grateful that Christie's has agreed to auction the portrait to help girls go to school around the world.
"The funds raised will support the work of the Malala Fund, including helping young Syrian refugees in Jordan and girls freed from child labor now attending school in Pakistan.
"I hope that whoever buys the painting knows that their generosity will directly help children in some of the most challenging environments in the world."
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