Ben Affleck suits up in 1920s attire for first day of filming Live By Night... while Jennifer Garner takes kids to school in Halloween costumes

It has been four months since Ben Affleck and Jennifer Garner announced they were ending their marriage.

And while the details of their impending divorce still need to be worked out, Ben is getting stuck back into work.

The 43-year-old was spotted on the Brunswick, Georgia set of his latest project Live By Night on Wednesday, during the first day of filming.

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Back to work: Ben Affleck was spotted during the first day of filming his latest project Live By Night in Brunswick, Georgia on Wednesday

Back to work: Ben Affleck was spotted during the first day of filming his latest project Live By Night in Brunswick, Georgia on Wednesday

Meanwhile, Jennifer was seen on parenting duties, taking their two youngest children to school in Halloween costumes.

Seraphina, six, was dressed as a mallard, wearing a green duck mask and orange webbed feet, along with a brown top that was covered in feathers.

Meanwhile three-year-old Samuel appeared to be going as a blueberry bush, in a grey hoodie that was covered in fake green leaves and blue pom poms. 

Toot toot: The actor and director was also spotted in a 1920s Jaguar as the cameras rolled

Toot toot: The actor and director was also spotted in a 1920s Jaguar as the cameras rolled

On parenting duty: Meanwhile, Jennifer Garner took Seraphina and Samuel to school in Halloween costumes in Los Angeles

On parenting duty: Meanwhile, Jennifer Garner took Seraphina and Samuel to school in Halloween costumes in Los Angeles

Too cute: While the six-year-old was dressed as a mallard, the three-year-old appeared to be a blueberry bush

Too cute: While the six-year-old was dressed as a mallard, the three-year-old appeared to be a blueberry bush

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Jennifer, also 43, went make-up free in a black and white striped Breton top and jeans, along with black trainers.

She sipped on a coffee as she strolled down the street with the two youngsters and their new nanny, who was hired after claims that Ben was romantically involved with their previous nanny.

Ben is directing and starring in Live By Night and also helped write the screenplay, which is based on the acclaimed Dennis Lehane crime novel of the same name.

In the holiday spirit: Seraphina wore a green duck mask and orange webbed feet, along with a top covered in brown feathers

In the holiday spirit: Seraphina wore a green duck mask and orange webbed feet, along with a top covered in brown feathers

Undercover: Meanwhile Samuel had green leaves and blue pom poms glued to his hoodie

Undercover: Meanwhile Samuel had green leaves and blue pom poms glued to his hoodie

Off we go: Jennifer, who was sipping on a coffee, held on to her two youngest children

Off we go: Jennifer, who was sipping on a coffee, held on to her two youngest children

The film, which is slated for a 2017 release, also stars Zoe Saldana, Sienna Miller, Elle Fanning and Chris Cooper.

Live By Night is set in Ben's hometown of Boston in the prohibition era, and the actor was seen driving a vintage Jaguar around while cameras rolled on Wednesday.

He was also wearing typical 1920s garb in the form of a white shirt tucked into beige high-waisted wide-leg trousers with suspenders.

Dressed down: The 43-year-old wore a black and white striped top, jeans and black trainers

Dressed down: The 43-year-old wore a black and white striped top, jeans and black trainers

Raring to go: Seraphina marched ahead of the group, clearly excited for the holiday on Saturday

Raring to go: Seraphina marched ahead of the group, clearly excited for the holiday on Saturday

A helping hand: The family were joined by their new nanny, who Jennifer hired after Ben was allegedly romantically linked to their previous nanny

A helping hand: The family were joined by their new nanny, who Jennifer hired after Ben was allegedly romantically linked to their previous nanny

Ben additionally sported shiny mahogany brogues, a striped tie and a fedora. He slipped a grey double-breasted jacket for some scenes.

That same day, the Oscar winner shared a first look at the film on Twitter.

He posted a snapshot of a monitor which showed him walking hand-in-hand with a young boy, along with the caption: 'First day. First shot. #livebynightmovie.' 

Together: They happily chatted away to one of Samuel's friends and his mother as they walked to school

Together: They happily chatted away to one of Samuel's friends and his mother as they walked to school

In need of a pick-me-up: Jennifer was sipping in a coffee as she strolled down the street

In need of a pick-me-up: Jennifer was sipping in a coffee as she strolled down the street

Natural beauty: The actress went make-up free for the outing, and appeared to have wet hair

Natural beauty: The actress went make-up free for the outing, and appeared to have wet hair

The previous day, Ben was seen puffing on a cigarette as he checked out the set before filming began. 

Set during the roaring 20s, the drink is flowing and bullets are flying in the age of Al Capone.

The book on which it is based follows Joe Coughlin, youngest son of a Boston police captain, after he turns his back on his upbringing to get into the world of crime.

Blast from the past: Ben was dressed in typical 1920s attire while filming the prohibition era crime drama

Blast from the past: Ben was dressed in typical 1920s attire while filming the prohibition era crime drama

Taking the reins: The star is acting in and directing the movie, and helped to write the screenplay, which was adapted from the novel of the same name

Taking the reins: The star is acting in and directing the movie, and helped to write the screenplay, which was adapted from the novel of the same name

Looking sharp: Ben wore a white shirt with beige trousers and suspenders, along with a fedora and striped tie

Looking sharp: Ben wore a white shirt with beige trousers and suspenders, along with a fedora and striped tie

After working his way up from petty crime, the story begins in earnest with him in the pay of the city's most notorious mobsters. 

Live By Night marks Ben's first directorial effort since 2012's Argo, which won Best Picture at the Oscars in 2013.

The A-lister however was snubbed in the Best Director category, making it only the fourth time in the history of the Academy Awards that a film has won Best Picture without a Best Director nod.

Star-studded: The movie, due for release in 2017, also stars Zoe Saldana, Sienna Miller, Elle Fanning and Chris Cooper

Star-studded: The movie, due for release in 2017, also stars Zoe Saldana, Sienna Miller, Elle Fanning and Chris Cooper

Smoke break: The day before, the Oscar winner was seen on set, puffing on a cigarette
Smoke break: The day before, the Oscar winner was seen on set, puffing on a cigarette

Smoke break: The day before, the Oscar winner was seen on set, puffing on a cigarette

This previously happened just with 1929's Wings (at the first ever Oscars), 1932's Grand Hotel and 1989's Driving Miss Daisy.

It has also been announced that Ben will helm an as yet untitled Batman reboot, while portraying the caped crusader.

He stars in the eagerly awaited Batman v Superman: Dawn Of Justice, and will additionally play the superhero in Suicide Squad and two Justice League movies.

Ben and Jennifer announced their split on June 30, a day after their 10th wedding anniversary. They are also parents to nine-year-old Violet. 

Animal lover: Scruffy Ben chatted to a police officer and pet his dog before getting to work

Animal lover: Scruffy Ben chatted to a police officer and pet his dog before getting to work

He likes what he sees: The father-of-three was seen checking out the set before filming began

He likes what he sees: The father-of-three was seen checking out the set before filming began

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