Sienna Miller reveals she was warned she could become 'obsolete' as an actress when she turned 40 due to a lack of roles for older women

Sienna Miller reveals she was warned she could become 'obsolete' as an actress when she turned 40 due to a lack of roles for older women

Sienna Miller has revealed she was warned she could become 'obsolete' when she turned 40 due to a lack of roles for older women.