Sienna Miller revealed she was expecting her third child at the Fashion Awards last night when she rocked up in a sheer Givenchy dress, which showcased her blossoming bump

Sienna Miller sent fans into a frenzy last night when she revealed she was expecting her third child. The actress, 43, made sure all eyes were on her when she rocked up at the Fashion Awards in London, sporting a a sheer Givenchy dress, which showcased her blossoming bump - and underwear.

The Foxcatcher star , who is expecting her baby with boyfriend Oli Green, 28 - with whom she also shares a daughter, two - looked radiant in the ethereal white ensemble, which featured a sheer lace skirt and a bra top.

Sienna wore her long blonde hair loose, in beachy waves and complimented the look with blush-feathered shoes, l

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