Sienna Miller exudes elegance in blush satin gown with her age-defying mum during ATG Summer Party

Sienna Miller flaunts a huge fake baby bump as she gets into character for her latest movie project

Sienna Miller flashes her svelte torso in classic white T-shirt and baggy jeans

Sienna Miller looks effortlessly chic in a khaki jumpsuit and sliders while filming in New York