Sienna Miller accentuates her slender frame in sportswear as she heads to the gym n NYC

She’s no stranger to dazzling in chic ensembles on screen and at high-profile events.

And Sienna Miller proved she’s as stunning dolled up to the nines as low-key while heading to the gym in New York City on Sunday evening.

The Alfie actress, 36, opted for comfort on her casual day out as she donned a navy zip-up cardigan, embellished with stripes in shades of red.

Casual display: Sienna Miller proved she’s as stunning dolled up to the nines as low-key while heading to the gym in New York City on Sunday evening

Displaying her famously lean legs, the screen star slipped into a pair of monochrome running tights and sporty grey trainers. 

Sienna, who shares six-year-old daughter Marlowe with ex Tom Sturridge, carried her possessions along in a huge white shopper bag, and protected her eyes from the sun in orange-tinted frames.

The blonde exhibited her envy-inducing clear complexion as she went make-up free, and swept her tresses into a loosely tousled ponytail.

Off she goes: The Alfie actress, 36, opted for comfort on her casual day out as she donned a navy zip-up cardigan, embellished with stripes in shades of red

Off she goes: The Alfie actress, 36, opted for comfort on her casual day out as she donned a navy zip-up cardigan, embellished with stripes in shades of red

Off she goes: The Alfie actress, 36, opted for comfort on her casual day out as she donned a navy zip-up cardigan, embellished with stripes in shades of red

Breakfast to go: Sienna carried her possessions along in a huge white shopper bag, and protected her eyes from the sun in orange-tinted frames

Breakfast to go: Sienna carried her possessions along in a huge white shopper bag, and protected her eyes from the sun in orange-tinted frames

Earlier this year, Sienna made it known that she wasn’t a fan of using social media – putting a distinct focus on photo-sharing platform Instagram.

While the New Yorker didn’t shy away from admitting that she had joined Instagram in 2017, she confessed to never using the app as she believes in living in the moment.

‘Everybody said you should be on it, ‘the world’s changing and you’re a dinosaur’, which got insulting,’ the mother-of-one told Harper’s Bazaar in April.

The Lost City of Z star admitted she wasn’t keen on sharing candid snaps, though it may only be through a photo, with people she doesn’t know. She’d rather send them to people that she knows. 

Naturally radiant: The blonde exhibited her envy-inducing clear complexion as she went make-up free, and swept her tresses into a loosely tousled ponytail

Naturally radiant: The blonde exhibited her envy-inducing clear complexion as she went make-up free, and swept her tresses into a loosely tousled ponytail

She said: ‘I also find Instagram a huge time waster, so I deleted the app because every time I’d go for a pee or get in a cab, I’d check it.

‘There’s a whole world going on out there that I’m not engaging with because I’m mindlessly thumbing through it.’

The Golden Globe winner’s forthcoming project Wander Darkly will see Sienna reach new heights as far as her acting career is concerned.

The movie is centered on a couple that is forced to make sense of their sudden car crash, but doing so proves to be quite the challenge. A release date for the love story project has yet to be announced.

Busy bee: The Golden Globe winner's forthcoming project Wander Darkly will see Sienna reach new heights as far as her acting career is concerned

Busy bee: The Golden Globe winner’s forthcoming project Wander Darkly will see Sienna reach new heights as far as her acting career is concerned

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