Sienna Miller looks effortlessly chic in a monochrome gingham maxi dress as she enjoys a casual day in New York

She often cuts a very glamorous figure at many a red carpet event.

But Sienna Miller proved she could nail off-duty chic just as well as she stepped out for a casual day in New York on Monday.

The Layer Cake actress, 37, looked stylish in a monochrome gingham maxi dress while making her way around the city.

Flawless: Sienna Miller nailed off-duty chic just as well as she stepped out for a casual day in New York on Monday

Flawless: Sienna Miller nailed off-duty chic just as well as she stepped out for a casual day in New York on Monday

The star teamed her black and white shirt dress with a simple pair of black, string sandals and carried her essentials in a black, cross-body Chanel bag. 

Sienna left her blonde tresses to loosely tumble over her shoulders, while she let her natural beauty shine through by ditching the make-up for the day. 

On Wednesday, Sienna put on an undeniably chic display while unveiling her cabin sign as a tribute for her career at the 45th Deauville American Film Festival. 

Walking along the Promenade des Planches, the actress wowed in a sleeveless turtleneck, white midi-skirt, complete with stylish shades.

Fashionista: The Layer Cake actress, 37, looked stylish in a monochrome gingham maxi dress while making her way around the city

Fashionista: The Layer Cake actress, 37, looked stylish in a monochrome gingham maxi dress while making her way around the city

Sienna has had an enviable career to date, landing her big break in 2004's Alfie with her ex Jude Law.

She has gone on to star in movies such as Factory Girl, G.I. Joe: The Rise of Cobra, and American Sniper.

The blonde bombshell will next star in the action flick 21 Bridges alongside Chadwick Boseman.

Sienna will also appear alongside Diego Luna in the drama Wander Darkly. 

On the personal front, Sienna recently made her first public appearance with her new man Lucas Zwirner during their romantic break in Venice.

Wow! On Wednesday, Sienna put on an undeniably chic display while unveiling her cabin sign as a tribute for her career at the 45th Deauville American Film Festival

Wow! On Wednesday, Sienna put on an undeniably chic display while unveiling her cabin sign as a tribute for her career at the 45th Deauville American Film Festival

Their romance has gone from strength to strength since they went public with their relationship in January earlier this year.

Sparks flew when the couple first crossed paths for the first time when they were introduced to each other through mutual friends.

It's not known exactly when Sienna and Lucas began dating, he was the star's date when she attended her ex Tom Sturridge's birthday party last year.

Exes Sienna and Tom have remained on good terms as they continued to co-parent their six-year-old daughter Marlowe three years on from their split.

Last year, Sienna gushed to Harper's Bazaar that Tom was her 'best friend in the entire world' and they often stay together to spend mutual time with their little girl.

They first started dating in 2011 but their romance came to an end in 2015 after just four years together.

Sienna also famously dated Jude Law on/off from 2003; the actor issued a public apology to her after having an affair with his children's nanny.

Oh so chic: Walking along the Promenade des Planches, the actress wowed in a sleeveless turtleneck, white midi-skirt, complete with stylish shades

Oh so chic: Walking along the Promenade des Planches, the actress wowed in a sleeveless turtleneck, white midi-skirt, complete with stylish shades

Sienna Miller looks effortlessly chic in a monochrome gingham maxi dress in New York

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