And now, her style reign looks set to continue after nailing one of the more trickier looks to get right – the perfect offfice outfit.
The 33-year-old Foxcatcher actress stepped out in New York the day after the awards ceremony looking flawless in striped wide-legged trousers and a navy V-neck cardigan, topped off with black block heels.
Showing no signs of a sore head from the previous night’s antics, Sienna looked fresh-faced and gorgeous as she swished her Prada tote on her arm, choppy blonde bob blowing in the breeze.
Dressing for the office is no mean feat, wherever you work, but this has just given us some major workwear inspo.
Wide leg trousers do wonders for the pins and look effortlessly stylish, while a cosy cardigan adds a nice preppy edge.
Shop Sienna’s look below, and head to our 30 Best Workwear Buys To Rock At The Office gallery for more.
By Robyn Munson