Sienna Miller looks demure in an on-trend peasant-style dress as she hits the red carpet for star-studded High-Rise premiere

She's known for mastering the trickiest of trends, and as such, Sienna Miller proved her fashion prowess once again on Friday night. 

The English rose managed to pull off a tricky peasant-style dress that hung loosely from her slender frame and married feminine lace with a demure high neckline.

As the star of new British film release High-Rise, Sienna put in a suitably noteworthy appearance for the red carpet premiere.

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Tricky trend: Sienna Miller looked confident on the red carpet in an of-the-moment peasant-style dress for the premiere of her new film High-Rise on Friday night

Tricky trend: Sienna Miller looked confident on the red carpet in an of-the-moment peasant-style dress for the premiere of her new film High-Rise on Friday night

Sienna left her golden tresses in loose waves, just kissing her shoulders in length and elegantly tucked behind her ears. 

She kept the look simple but accesorising with a neat box clutch that offered a little sparkle to her evening ensemble.

The actress flew solo, accompanied only by fellow stars of the 2015 release including Tom Hiddleston, Elisabeth Moss and Sienna Guillory, and demonstrably not with her former fiance Tom Sturridge.

Natural beauty: She looked ethereal in a shape that hung from her lithe form

Natural beauty: She looked ethereal in a shape that hung from her lithe form

Glamorous: She kept the look simple with a demure high neckline and a simple box clutch

Glamorous: She kept the look simple with a demure high neckline and a simple box clutch

Pout perfect: With her lips pursed, the blonde was simply exquisite

Pout perfect: With her lips pursed, the blonde was simply exquisite

New release: In the film, based around the residents of a tower block in the 1970s, Sienna takes on the role of Charlotte Melville

New release: In the film, based around the residents of a tower block in the 1970s, Sienna takes on the role of Charlotte Melville

Look angelic in a Michael Kors Collection gown

If flying pig moment ever were to occur when we would say 'I do' to some poor unsuspecting chap, this would be our dream dress.

The gossamer soft chiffon hangs elegantly from Sienna's slender frame. While the delicate lace adds to its dewy, feminine appeal.

The bohemian style peasant gown is hot off of Michael Kors' Spring 2016 runway collection. So the ingenue got first dibs, but we'll have to wait till Spring of next year to buy it. (totally worth the wait!)

But in the meantime we've put together a gorgeous edit of alternatives in the carousel below-- all of which are just as whimsical and dreamy as Sienna's dress.

* PRICES MAY NOT BE AS ADVERTISED

Sienna was said to have split from the father of her child Marlowe in July and though dressed up to the nines on Friday night, she was once again not wearing her engagement ring.  

She clearly had bigger fish to fry on the career front and was set to preview her latest big screen masterpiece that night.

In the film, based around the residents of a tower block in the 1970s, Sienna takes on the role of Charlotte Melville.

Radiant: She walked the red carpet alone without a care
Centre of attention: The moviestar was the leading lady of the night

Ethereal: The blonde looked simply exquisite in the floaty number that featured lace panels

Fan frenzy: Sienna stopped to greet the waiting fans who stood outside in the cold

Fan frenzy: Sienna stopped to greet the waiting fans who stood outside in the cold

Dazzling: She was certainly a show-stopper, smiling in the newly-coined fish-gape lip posture

Dazzling: She was certainly a show-stopper, smiling in the newly-coined fish-gape lip posture

No ring: Sienna proved that the engagement to Tom Sturridge is firmly off with no ring on her finger

No ring: Sienna proved that the engagement to Tom Sturridge is firmly off with no ring on her finger

The movie, directed by Ben Wheatley who Sienna said was 'amazing' to work with on the night, is based around the book J.G. Ballard. 

Tom Hiddleston tackles the role of Dr. Robert Laing, a resident of the twenty-fifth floor who strikes up a relationship with Sienna's Charlotte. 

It's not the only new release that Sienna is looking forward to in the coming months because she will also appear in Burnt with Bradley Cooper, similarly released later this month. 

Subtle hint: The engagement was supposedly broken off back in July

Subtle hint: The engagement was supposedly broken off back in July

Time for the fans: Sienna's army of fans were out in force to greet her that night

Time for the fans: Sienna's army of fans were out in force to greet her that night

In her element: She certainly seemed to be enjoying her red carpet moment

In her element: She certainly seemed to be enjoying her red carpet moment

Something funny: An onlooker seemed to make Sienna giggle from the crowd

Something funny: An onlooker seemed to make Sienna giggle from the crowd

Looking lithe: The blonde's figure was flattered by a subtle waistband
Pout perfect: She pursed her lips in a provocative fashion

Glamorous: Her gown just skimmed the red carpet with a lace detail in the lower skirt

Classic black dress: Co-star Elisabeth Moss cut an elegant figure in a little black dress

Classic black dress: Co-star Elisabeth Moss cut an elegant figure in a little black dress

All smiles: Elisabeth beamed from ear to ear with her red lipstick highlighting her grin

All smiles: Elisabeth beamed from ear to ear with her red lipstick highlighting her grin

Chic: She wore her hands in her pockets with an air of conviction
Stunner: Leaving her shoulders bare, the look was a striking one

Red carpet beauty: Sienna Guillory did a good job of standing out against the red carpet with an eye-catching red satin jumpsuit

Anticipating the release of High-Rise, due out on the same day, it was Elisabeth Moss and Sienna Guillory who were lighting up the red carpet.

Elisabeth was stunning as a platinum blonde, picking the oldest trick in book by showing off her shape in a little black dress.

Sienna meanwhile, was less subtle, and did her best to upstage the reddest of red carpets with a crimson satin jumpsuit. 

Leading man Tom also sharpened up in a deep navy suit, accompanied by a skinny tie and a crisp smart shirt. 

In the spotlight: The Mad Men actress plays Helen Wilder in the 1970s-set thriller

In the spotlight: The Mad Men actress plays Helen Wilder in the 1970s-set thriller

A favourite: She opted for the oldest trick in the book, the LBD
Platinum beauty: Her hair colour was a departure from her Mad Men days

Black beauty: Elisabeth added a hint of sparkle to her ensemble with a pair of silver shoes on

Leading man: Tom Hiddleston hit the red carpet to preview his lead role in the film

Leading man: Tom Hiddleston hit the red carpet to preview his lead role in the film

Waiting fans: Tom took the time to take selfies in a brooding fashion for the admirers

Waiting fans: Tom took the time to take selfies in a brooding fashion for the admirers

All smiles: The handsome leading man was positively giddy at the prospect of seeing the new film

All smiles: The handsome leading man was positively giddy at the prospect of seeing the new film

Quick wave: On his way into the premiere, Tom waved to his admirers with a slick look

Quick wave: On his way into the premiere, Tom waved to his admirers with a slick look

Cute duo: Actor Peter Ferdinando, another star of the film, and his other half Alexandra Weaver made a handsome duo on the red carpet

Cute duo: Actor Peter Ferdinando, another star of the film, and his other half Alexandra Weaver made a handsome duo on the red carpet

Glamorous: Alexandra Weaver wore a daring plunging ensemble to the premiere

Glamorous: Alexandra Weaver wore a daring plunging ensemble to the premiere

Cute couple: Jessica Adams and James Purefoy walked the red carpet together

Cute couple: Jessica Adams and James Purefoy walked the red carpet together

Smartened up: English actor Augustus Prew wore a turtle neck beneath his suit

Smartened up: English actor Augustus Prew wore a turtle neck beneath his suit

Acting talent: Stacy Martin, who appears as Fay, kept things classic in a floral number

Acting talent: Stacy Martin, who appears as Fay, kept things classic in a floral number

Laugh out loud: Inside the venue, something seemed to tickle (from left) Sienna, Tom and Elisabeth

Laugh out loud: Inside the venue, something seemed to tickle (from left) Sienna, Tom and Elisabeth

Group shot: The trio of co-stars appeared to have forged a strong bond throughout filming

Group shot: The trio of co-stars appeared to have forged a strong bond throughout filming

Giddy: The laughter between the three did not stop for some time...

Giddy: The laughter between the three did not stop for some time...

Regain composure: After all of the giggles, the trio regained their composure well

Regain composure: After all of the giggles, the trio regained their composure well

BFI Gala: (From left) Ben Wheatley and Jeremy Thomas squeezed into shot with Tom, Sienna and Elisabeth

BFI Gala: (From left) Ben Wheatley and Jeremy Thomas squeezed into shot with Tom, Sienna and Elisabeth

Ever the party girl, Sienna headed over to Eva Cavalli's masquerade ball at One Mayfair, also in the capital - and opted to stay in the same boho ensemble she was rocking at the premiere.

The stunning actress was rubbing shoulders with the toast of the fashion world at the party - most notable models du jour Cara Delevingne and Kendall Jenner. 

She was seen posing up a storm with Jessica Adams and James Purefoy - who joined her in departing the premiere and heading to the swanky do. 

Partytime! Ever the party girl, Sienna headed over to Eva Cavalli's masquerade ball at One Mayfair, also in the capital - and opted to stay in the same boho ensemble she was rocking at the premiere
Living it up: She looked equally as sensational at the party as she did at the premiere

Partytime! Ever the party girl, Sienna headed over to Eva Cavalli's masquerade ball at One Mayfair, also in the capital - and opted to stay in the same boho ensemble she was rocking at the premiere

Good pals: She was seen posing up a storm with Jessica Adams and James Purefoy - who joined her in departing the premiere and heading to the swanky do

Good pals: She was seen posing up a storm with Jessica Adams and James Purefoy - who joined her in departing the premiere and heading to the swanky do

Boho babes: The ladies looked like an emblem of the past in their chic hippy-style ensembles

Boho babes: The ladies looked like an emblem of the past in their chic hippy-style ensembles

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