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Sienna Miller is to feature in a new poster campaign for children’s charity Unicef.
The actress, 27, is expected to pose in jewels to raise money for a reading project in association with Mont Blanc.
Other stars lined up for the campaign include Eva Longoria, 33, and Hilary Swank, 34, reports the Sunday Mirror.
Sienna’s rep declined to comment on how much she is getting paid for the project.
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