Sienna Miller
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Sienna Miller turns London Eye red for World Aids Day

Sienna Miller has switched the lights on the London Eye from blue to red to mark World Aids Day.

The actress wrapped up for the cold weather to raise awareness for the (RED) campaign, which raises funds for medication to fight the disease.

The London landmark was just one of more than 80 international venues to be illuminated in red, including the Sydney Opera House and the Empire State Building.