She posed in a choppy black wig to back Macmillan Cancer Support, which is encouraging the public to go for a new look to support people affected by the disease.
She said: "It's been so cool to try something different and it's such an easy way to help people affected by cancer."
Strictly Come Dancing winner Abbey Clancy was also pictured by photographer Rankin to raise awareness of the charity's Shave Or Style campaign.
Macmillan wants the public to trial a new style and share a picture of themselves via social media. And they are encouraging people to donate £3 to the campaign by texting STYLE to 70550.
TV presenter Gethin Jones also took part.