Rachel Weisz stuns in black floral gown as she teams up with suave Colin Farrell at The Lobster's London premiere

They've been doing the rounds promoting their new movie The Lobster.

And Rachel Weisz, 45, and Colin Farrell, 39, looked incredible as they stepped out for the film's London premiere on Tuesday night.

Rachel looked beautiful in an elegant, full-length Alexander McQueen gown as she posed for photos on the red carpet in Leicester Square.

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All dressed up: Colin Farrell, 39, and Rachel Weisz, 45, were dressed to impress as they stepped out for The Lobster's London premiere on Tuesday night

All dressed up: Colin Farrell, 39, and Rachel Weisz, 45, were dressed to impress as they stepped out for The Lobster's London premiere on Tuesday night

The floaty chiffon frock was dotted with clusters of flowers and cinched in at the waist, accentuating her slender waistline with a thin black satin ribbon.

The gorgeous gown appeared to feature a black bustier which peeped out from underneath the dress' plunging neckline.

She wore her silky brunette tresses in a sleek chignon and wore her fringe in a singular, perfectly-coiffed curl swept over to the right hand side of her face.

Glam: Rachel looked beautiful  in an elegant full-length Alexander McQueen gown

Glam: Rachel looked beautiful in an elegant full-length Alexander McQueen gown

Stop the show in a black floral gown

Rachel Weisz looked like a million bucks at the London premiere of The Lobster.

The 45-year-old stunned the red carpet in a black chiffon gown with abstract gold floral print, can you say #goddess!

The maker of her ethereal dress is none other than Alexander McQueen. Unfortunately, the exact dress isn't available but you can click over to Net-a-Porter to shop Alexander McQueen's current collection.

Make sure to take a look at our style edit below for other black and gold alternatives!

We've got high street options from the likes of Aiden Mattox, Ralph Lauren, and Diane von Furstenberg BUT if you're in the mood for a splurge than click over to Neiman Marcus to snag the gorgeous floral gown by Badgley Mischka!

* PRICES MAY NOT BE AS ADVERTISED
Sophisticated: The co-stars posed for photos together on the red carpet in Leicester Square

Sophisticated: The co-stars posed for photos together on the red carpet in Leicester Square

Jokes: Rachel looked on at Colin with admiration as they shared a joke ahead of the screening 

Jokes: Rachel looked on at Colin with admiration as they shared a joke ahead of the screening 

In it together! The pair dutifully teamed up on the red carpet prior to the movie's big reveal 

In it together! The pair dutifully teamed up on the red carpet prior to the movie's big reveal 

The Mummy actress accessorised her glamorous evening look with sparkly drop earrings and a singular silver bracelet.

She wore classic make-up with a vampish twist, pairing dark smokey brown eye shadow with a deep bed lip and a hint of bronzer which defined her chiselled cheek bones.

The star posed with her arms by her side as she sashayed down the red carpet ahead of the screening at Vue cinema, teaming up with Colin Farrell as she did so.

Colin looked particularly suave in a deep purple three piece Dolce and Gabbana suit which he wore with a matching tie and crisp white shirt.

Double trouble: The twosome put a friendly arm around one another as they flashed their pearly white smiles 

Double trouble: The twosome put a friendly arm around one another as they flashed their pearly white smiles 

Stars of the show: The pair went arm-in-arm on the red carpet as they posed for an endless stream of pictures

Stars of the show: The pair went arm-in-arm on the red carpet as they posed for an endless stream of pictures

Fan favourite: Rachel was met by a crowd of screaming fans clamoring for her autograph 

Fan favourite: Rachel was met by a crowd of screaming fans clamoring for her autograph 

Arm-in-arm: Rachel and Colin put on a united front at the Leicester Square based event 

Arm-in-arm: Rachel and Colin put on a united front at the Leicester Square based event 

Snap happy: Colin was happy to pose for selfies with fans as he walked past them 

Snap happy: Colin was happy to pose for selfies with fans as he walked past them 

The Phone Booth actor, who plays the lead in the movie, looked well groomed with his hair slicked back off his face.

Both stars were more than happy to sign autographs and pose for selfies with fans as they mingled with the crowd ahead of the film's start time.

Olivia Colman was also at the event and had opted for sophisticated chic for the big London reveal.

Like Rachel, the Broadchurch star wore a patterned black and gold dress however hers featured long sleeves a high neck and cut off at the knee.

Elegant: Rachel's floaty chiffon frock was dotted with clusters of flowers and cinched in at the waist, accentuating her slender waistline with a thin black satin ribbon

Elegant: Rachel's floaty chiffon frock was dotted with clusters of flowers and cinched in at the waist, accentuating her slender waistline with a thin black satin ribbon

Glam: The gorgeous gown appeared to feature a black bustier which peeped out from underneath the plunging neckline

Glam: The gorgeous gown appeared to feature a black bustier which peeped out from underneath the plunging neckline

She rounded off her evening ensemble with a black lace cape and black round toe court shoes.

Olivia wore her brunette tresses in a loose updo and added some colour to her look with rosy cheeks which set off her dark eyeliner

Ariane Labed, who plays The Maid in the movie, covered her curves in a black smock dress and posed for photos alongside producer Yorgos Lanthimos on the red carpet.

Jessica Barden looked cute in a Markus Lupfer metallic blue skate dress and yellow snakeskin platform heels.

Coiffed: She wore her silky brunette tresses in a sleek chignon and wore her fringe in a singular, perfectly-coiffed curl swept over to the right hand side of her face
Flashing some flesh: Rachel's dress boasted a plunging neckline at the back

Coiffed: She wore her silky brunette tresses in a sleek chignon and wore her fringe in a singular, perfectly-coiffed curl swept over to the right hand side of her face

Bling: She accessorised her glamorous evening look with sparkly drop earrings and a singular silver bracelet

Bling: She accessorised her glamorous evening look with sparkly drop earrings and a singular silver bracelet

Natural beauty: She wore classic make-up with a vampish twist, pairing dark smokey brown eye shadow with a deep bed lip and a hint of bronzer which defined her chiselled cheek bones

Natural beauty: She wore classic make-up with a vampish twist, pairing dark smokey brown eye shadow with a deep bed lip and a hint of bronzer which defined her chiselled cheek bones

On the move: The Lobster is a sci-fi love story in which single people are arrested and transferred to a hotel before being turned into beasts if they can't find a love interest within 45 days

On the move: The Lobster is a sci-fi love story in which single people are arrested and transferred to a hotel before being turned into beasts if they can't find a love interest within 45 days

The film, which was co-written by Lanthimos and Efthimis Filippou, is a sci-fi love story in which single people are arrested and transferred to a hotel.

Colin Farrell plays David, a nervous young man who, finding himself suddenly and illegally single, is booked into a creepy hotel where he has to find a new mate or face being transformed into the animal of his choice and sent into The Woods.

And Rachel, who has been married to Bond star Daniel Craig for four years, has said she will always associate Colin with his Lobster alter-ego.

Dapper: Colin looked particularly suave in a deep purple three piece suit which he wore with a matching tie and crisp white shirt
Dapper: Colin looked particularly suave in a deep purple three piece suit which he wore with a matching tie and crisp white shirt

Dapper: Colin looked particularly suave in a deep purple three piece Dolce and Gabbana suit which he wore with a matching tie and crisp white shirt

Slick: The Phone Booth actor, who plays the lead in the movie, looked well groomed with his hair slicked back off his face

Slick: The Phone Booth actor, who plays the lead in the movie, looked well groomed with his hair slicked back off his face

Giving back: Both stars were more than happy to sign autographs and pose for selfies with fans as they mingled with the crowd ahead of the film's start time
Giving back: Both stars were more than happy to sign autographs and pose for selfies with fans as they mingled with the crowd ahead of the film's start time

Giving back: Both stars were more than happy to sign autographs and pose for selfies with fans as they mingled with the crowd ahead of the film's start time

The Irish star  had to pile on the pounds to play David in the unconventional love story, Lanthimos' English-language debut, in which the pair play two people who fall in love.

Speaking on the red carpet outside Vue West End cinema, the actress said: 'I'd never met Colin before. I met him when he had the increased weight and his face and his jawline were like doughy flesh, so he will always be David to me.'

Farrell said he didn't enjoy the weight gain. 'It was not really a joy because you're just eating for eight weeks. I didn't want to put on weight because I didn't want to work to lose it, so I was saying to Yorgos, 'What about if he's really thin?' Because I did want to alter my physicality somewhat.'

Classy: Olivia Colman was also at the event and had opted for sophisticated chic for the big London reveal

Classy: Olivia Colman was also at the event and had opted for sophisticated chic for the big London reveal

Chic: Like Rachel, the Broadchurch star wore a patterned black and gold dress however hers featured long sleeves a high neck and cut off at the knee
Chic: Like Rachel, the Broadchurch star wore a patterned black and gold dress however hers featured long sleeves a high neck and cut off at the knee

Chic: Like Rachel, the Broadchurch star wore a patterned black and gold dress however hers featured long sleeves a high neck and cut off at the knee

The Lobster features characters staying at a hotel who have to find themselves a partner within 45 days in a life-or-death situation.

Weisz - whose character is described as Shortsighted Woman - said: 'I don't think the plot of the film is to be taken seriously. It's very absurd.

'It's more about how we all live like sheep and we follow rules and nobody really steps out of line. It's a very original film about how hard it is to be original.'

The finishing touches: Olivia wore her brunette tresses in a loose updo and added some colour to her look with rosy cheeks which set off her dark eyeliner

The finishing touches: Olivia wore her brunette tresses in a loose updo and added some colour to her look with rosy cheeks which set off her dark eyeliner

The Lobster is already in US theatres and hits cinemas UK cinemas on October 13. 

Simple but effective: Ariane Labed covered her curves in a black smock dress

Simple but effective: Ariane Labed covered her curves in a black smock dress

Team: Ariane posed for photos alongside producer Yorgos Lanthimos on the red carpet

Team: Ariane posed for photos alongside producer Yorgos Lanthimos on the red carpet

Natural beauty: Ariane plays The Maid in the sci-fi movie

Natural beauty: Ariane plays The Maid in the sci-fi movie

Farrell added: 'Love at first sight is possible and it's a quicker time than that, but the film asks questions about aloneness, coupledom and singledom.

'People can make whatever decisions they want after they've seen the film. That's another way of saying, 'I don't know'.'

Colman, who plays the hotel manager, said: 'For some people it would be possible. It's not an ideal way of doing it, being forced into it. It's a fun notion.'

Edgy: Jessica Barden, who plays Nosebleed Woman, looked cute in a metallic blue skate dress and yellow snakeskin platform heels
Edgy: Jessica Barden, who plays Nosebleed Woman, looked cute in a metallic blue skate dress and yellow snakeskin platform heels

Edgy: Jessica Barden, who plays Nosebleed Woman, looked cute in a metallic blue Markus Lupfer skate dress and yellow snakeskin platform heels

Not a night to miss: Ben Whishaw, who plays The Limping Man in the flick, also put in an appearance

Not a night to miss: Ben Whishaw, who plays The Limping Man in the flick, also put in an appearance

And relax! The cast enjoyed a glass of wine before the screening 

And relax! The cast enjoyed a glass of wine before the screening 

Lanthimos said he is 'proud' of his cast.

'I was anxious about how it would work out as it was mostly people I have never worked with or known before. But all of the actors were amazing, they gel together very well. It was a great experience.'

The Lobster opens in UK cinemas on Friday, October 16, and is already in theatres in the US. 

Non-stop: Rachel and Colin posed with various members of the cast and crew at the high-profile bash 

Non-stop: Rachel and Colin posed with various members of the cast and crew at the high-profile bash 

Good friends: The Lobster entourage clearly developed a great bond on set 

Good friends: The Lobster entourage clearly developed a great bond on set 

 

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