Pregnant Marion Cotillard skims her baby bump in glam black mini as she flashes endless legs at Allied premiere in London

She has been blazing the promotional trail in a bevvy of sophisticated ensembles. 

And pregnant Marion Cotillard once again pulled it out of the sartorial bag as she graced the red carpet at the premiere of her latest movie Allied on Monday night.

The 41-year-old French beauty, who is expecting her second child with French actor and director Guillaume Canet, looked incredible in a loose-fitting black gown with a chic train detail. 

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A vision: Pregnant Marion Cotillard once again pulled it out of the bag as she graced the red carpet at the premiere of her upcoming movie Allied on Monday night

Marion stars alongside Brat Pitt in the movie, which has courted controversy due to the Brad's marriage split from wife Angelina Jolie, leading to reports of a romance between the co-stars. 

However, the brunette beauty has proved herself to be defiant in the face of the whispers as she stormed the red carpet looking sensational in her high-necked black gown - oozing elegance as she went. 

Her black dress gently skimmed her burgeoning baby bump although she was sure to flash her endless legs with the help of the mullet hemline. 

The long sleeves and high-neck ensured she did not go over-the-top with her ensemble as she opted for understated glamour.

Glowing: The 41-year-old French beauty, who is expecting her second child with French actor and director Guillaume Canet, looked incredible in a loose-fitting black gown with a chic train detail

Glamour: Marion stars alongside Brat Pitt in the movie, which has courted controversy due to the Brad's marriage split from wife Angelina Jolie, leading to reports of a romance between the co-stars

Keep it sleek and sophisticated in black like Marion

Marion Cotillard looked her usual stunning self at the London premiere for new film Allied, wearing a high-low hem dress by Stella McCartney.

We love the dramatic effect of the simple shift paired with the statement trail at the back, as well as the chic black hue - LBDs are every woman's best friend!

The actress is one of our favourite red-carpet dressers because she strikes the perfect balance between classic and quirky. The pieces she picks will inevitably always have a twist on the traditional, just like this number.

Being a high-fashion custom dress, Marion's look is pretty hard to replicate. So why not simply stick to black shifts this season to ensure you're investing in a dress that will never go off trend meaning you can wear it year after year? It's easy to dress up with statement jewels, bags and shoes too - it's a blank canvas ready to add your own stylish twist.

* PRICES MAY NOT BE AS ADVERTISED

Not listening: However, the brunette beauty has proved herself to be defiant in the face of the whispers as she stormed the red carpet looking sensational in her high-necked black gown - oozing elegance as she went

Boosting her height and lengthening her legs was a pair of gold pointed stiletto heels which tied in perfectly with a pair of dazzling chandelier earrings - the perfect accompaniments to make the muted look pop. 

Her lustrous brunette tresses were styled into a sweeping side-parting with the ends formed into a bouncy style to perfect her polished red carpet look.

Marion perfectly exhibited the fabled expectant mum glow as she showed off her alabaster complexion with just a dab of rouge and a smudgy eye setting off the look even further.

All eyes on me: Marion was an expert in front of lenses from around the world 

Dazzler: Her serene look was perfect for one of the world's most chic movie stars

All smiles: Marion is proving herself to be every inch the all rounder as she juggles pregnancy and promotion 

Joining her on the red carpet was Brad, who lived up to his title of one of Hollywood's hottest hunks as he wore a slick black suit and pea coat.  

The pair looked in high spirits as they hugged and shared a joke on the carpet together - showing them to be rising above rumours of an affair that emerged earlier this year. 

Following Brad's announcement that he had split from wife Angelina Jolie, 41, in September, Marion became caught up in rumours of an affair.

Golden girl: Boosting her height and lengthening her legs was a pair of gold pointed stiletto heels which tied in perfectly with a pair of dazzling chandelier earrings - the perfect accompaniments to make the look pop

Stunner: Her lustrous brunette tresses were styled into a sweeping side-parting with the ends blow-dryed into a bouncy style to perfect her polished red carpet look

Chic pair: Joining her on the red carpet was Brad, who lived up to his title of one of Hollywood's hottest hunks as he wore a slick black suit and pea coat

High five! The co-stars clearly share a close bond as they high fived 

The actress spoke out at the time, announcing on Instagram that she was expecting a baby with 'my love, my best friend, the only one that I need,' her partner, Guillaume.

The La Vie En Rose star has been with Guillaume since 2007, and the pair have a five-year-old son named Marcel.

During an appearance on the Today Show on Thursday, Marion insisted that she did not hold a grudge when the affair gossip floated around.

Pals and colleagues: The pair looked in high spirits as they hugged and shared a joke on the carpet together - showing them to be rising above rumours of an affair that emerged earlier this year

Mummy dearest: The La Vie En Rose star has been with Guillaume since 2007, and the pair have a five-year-old son named Marcel

She explained: 'I never take anything personally when it doesn't concern me. So I didn't take it personally because I had nothing to do with those rumors or situation.'

She was then pressed by interviewer Matt Lauer who asked if she had let any of the whispers affect the making of the movie.

Marion replied: 'No I don't give energy to this and it was a wonderful, wonderful experience working with such a visionary director and amazing actor so that's all that matters.' 

Elegant beauty: Marion replied: 'No I don't give energy to this and it was a wonderful, wonderful experience working with such a visionary director and amazing actor so that's all that matters'

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