Sienna Miller sports a low-cut lilac corset dress in NYC

Sienna Miller looked ultra glamorous on Thursday evening as she enjoyed a night out in New York City‘s SoHo.

The actress, 40, showed off her stunning physique in a low-cut midi dress with a corset bustier for the evening, which was held at celeb hotspot The Palace.

Her garment featured a thigh-grazing slit, as she pulled her blonde locks into a tousled style, with some strands left to fall in a slight curl.

In style: Sienna Miller, 40, looked ultra glamorous in a low-cut midi dress with a corset bustier on Thursday evening as she enjoyed a night out in New York City’s SoHo

Sienna added a dewy palette of makeup to her look, complete with a soft pink lip and nude brushing of eyeshadow.

The star ensured all focus was on her as she kept accessories to a minimum for her evening in in Lower Manhattan.

A slew of other stars were also in attendance at the bash, which celebrated the launch of Club Moda, which is described as an exclusive early-aughts inspired party capsule.

Out on the town: Sienna was in good spirits as she partied with American socialite Lauren Santo Domingo

Celebrities such as Jourdan Dunn, Camille Rowe and White Lotus star Meghann Fahy all looked glamorous for the big bash.

It comes after the Sienna put on a loved up display with boyfriend Oli Green last week, as the pair enjoyed a NBA date.  

During the day out, Sienna couldn’t contain her smiles as her model beau, who is 15 years her junior, planted a sweet kiss on her hand while watching the at-home New York Knicks beat the visiting Detroit Pistons.

All stars: Sienna (right) and Lauren (left) posed with singer Kelis (centre), with the pop star wearing a pink trouser suit

Sienna and Oli have been dating since February, making a slew of sweet appearances together since as they took their relationship public.

Addressing her romantic life, the star recently said she spent years investing in a relationship with someone who was ‘a bucket with a hole in it of a person’.

The actress revealed she thought she would be married with children by her 30s but the relationships she was in during those years didn’t work out.

Speaking to British Vogue, Sienna said: ‘I’d invested what felt like the important years in something that was just a bucket with a hole in it of a person. I wasted time. And I felt like time was really my currency.’

She was quick to point out she was not referring to Tom Sturridge, who she dated from 2011 to 2015 and shares daughter Marlowe, ten, with.

But the pair proved that they were on friendly terms recently, as they partied at this year’s Glastonbury festival this summer with their respective partners – Oli and Alexa chung.

Prior to her relationship with Tom, Sienna was engaged to fellow actor Jude Law in 2004 after he popped the question on Christmas Day. 

He apologised to her in July of the following year for having an affair with the nanny of his children.

Sienna also had a highly publicised affair with the actor Bathlazar Getty in 2008.

Reflecting on her thirties being difficult, she added: ‘There was a lot of anxiety. Relationships hadn’t worked out – I imagined that I would be married with three kids, being a great mum. I love being a mother. It’s what I do best.’

Romance: Sienna is currently dating her model boyfriend Oli Green, who is 15 years her junior (pictued in July)