PICTURED: Jennifer Garner looks tense on set... as it emerges she's 'livid' over claims Ben Affleck had fling with nanny

Jennifer Garner was back to work on the set of her new movie in Atlanta on Wednesday amid mounting claims estranged husband Ben Affleck had a fling with the couple's former nanny.

The 43-year-old appeared strained as she was pictured walking with crew members during a day of filming Miracles From Heaven.

The mother-of-three clutched her mobile phone and a script, tension clearly etched on her face, as it was revealed that the actress was 'livid' to find out about Affleck's affair.

Scroll down for video 

Back to work: Jennifer Garner was pictured in Atlanta on Wednesday as she continues filming Miracles From Heaven amid mounting evidence that estranged husband Ben Affleck had a fling with their nanny Christine Ouzounian

Back to work: Jennifer Garner was pictured in Atlanta on Wednesday as she continues filming Miracles From Heaven amid mounting evidence that estranged husband Ben Affleck had a fling with their nanny Christine Ouzounian

Garner wore a loose-fit white T-shirt with cuffed blue jeans as she arrived on set and was later seen sporting a patterned orange blouse and white trousers as she prepared for cameras.

While stepping out of a black SUV the actress appeared distracted by her cell phone, looking down with a furrowed brow as she held it in front of her. 

Reports emerged this week that Christine Ouzounian, a former nanny of the divorcing Hollywood couple, is claiming she had a romance with the 42-year-old Argo actor.

Looking tense: The 43-year-old actress was distracted by her phone as she stepped out of a car during a day of filming

Looking tense: The 43-year-old actress was distracted by her phone as she stepped out of a car during a day of filming

Ongoing divorce drama: Garner wore a patterned orange top and white trousers with her hair styled in curls as she prepare for cameras

Ongoing divorce drama: Garner wore a patterned orange top and white trousers with her hair styled in curls as she prepare for cameras

The 28-year-old blonde has been pictured out in Los Angeles in recent days as sources relayed to People that Ouzounian told friends the affair 'has been going on for a long time,' adding, 'Christine is in love with him.' 

The magazine also reports that Ouzounian accompanied Affleck along with his and Garner's three children on their Bahamas getaway last month before Garner flew separately to join them.

It was during that trip that the Hollywood couple broke the news of their divorce after 10 years of marriage.  

A friend of Ouzounian's says she left the Bahamas with Affleck and attended a charity poker event in Las Vegas with him. 

It was apparently while Garner was still in the Bahamas that she found out about the affair and was said to be 'livid'.

Keeping focused: Garner was pictured clutching the script as she walked with crew members on set

Keeping focused: Garner was pictured clutching the script as she walked with crew members on set

Slide into Jennifer's J.Crew camouflage sandals

Even in the most difficult of times Jennifer manages to look effortless and chic.

And we reckon her secret is in keeping things easy. Jennifer sticks with the basics-- the ol' jeans and a t-shirt look always does the trick!

And today she paired her classic ensemble with some easy-does- it metallic J. Crew slides.

The J.Crew 'Valencia' line of sandals modernized the traditional espadrille with a simple slide silhouette. Keeping the woven sole, they banded the sandal with a metallic, camouflage pattern-- it's both boyish and flirty at the same time.

The good news is that these summer sandals are now reduced to half price on J. Crew's website (click right).

The other good news is that we've rounded up a few alternatives in our edit below in case camo really isn't your look; perhaps you're looking for a more subtle print. You can never go wrong with a classic black!

* PRICES MAY NOT BE AS ADVERTISED

Another pal told the publication they had been shown photos by Ouzounian showing her sitting on Affleck's lap and the two of them kissing.

The duo reportedly enjoyed rendezvous at the Hotel Bel Air. 

Affleck was last pictured on Sunday as he stays in Atlanta to help take care of his and Garner's children; nine-year-old Violet, six-year-old Seraphina, and Samuel, three. 

Meanwhile Us Weekly claims that Ouzounian was fired by Jennifer after she discovered how well the pair were getting on but she remained in contact with Ben and spent time with him in Los Angeles on July 17. 

Dressed for comfort: The actress looked deep in thought while wearing a casual white T-shirt and cuffed blue jeans and metallic sandals

Dressed for comfort: The actress looked deep in thought while wearing a casual white T-shirt and cuffed blue jeans and metallic sandals

Bad news: Several sources are claiming Garner was livid about Affleck's affair with their nanny Christine Ouzounian. The 28-year-old has apparently claimed to friend that she's in love with the Argo actor

Bad news: Several sources are claiming Garner was livid about Affleck's affair with their nanny Christine Ouzounian. The 28-year-old has apparently claimed to friend that she's in love with the Argo actor

The actor's team has described the affair claims as 'baseless and untrue'  

And a rep told the New York Post's Page Six: 'The story is complete garbage and full of lies. You shouldn't be able to hide behind "blind sources" and attempt to destroy families going through a difficult time.' 

The allegations come following multiple reports that Ben's alleged infidelity led to his split from Jennifer, while it is has also been claimed that his drinking allegedly contributed. 

In the spotlight: Ouzounian, 28, was all smiles on Wednesday as she stepped out in Los Angeles amid claims she would meet Affleck at the Hotel Bel Air for liaisons

In the spotlight: Ouzounian, 28, was all smiles on Wednesday as she stepped out in Los Angeles amid claims she would meet Affleck at the Hotel Bel Air for liaisons

Strange coincidence: Ouzounian and Garner (pictured in Atlanta) stepped out in matching outfits on Tuesday - showing their similar taste in fashion

Strange coincidence: Ouzounian and Garner (pictured in Atlanta) stepped out in matching outfits on Tuesday - showing their similar taste in fashion

Explosive claims: Ben has denied he is romantically involved with his children's nanny, Christine Ouzounian, who he is pictured with in May

Explosive claims: Ben has denied he is romantically involved with his children's nanny, Christine Ouzounian, who he is pictured with in May

Ben and Jennifer have been wearing their wedding rings following the break-up, which they are said to be doing for the sake of their children. 

The couple announced their separation a day after their 10th wedding anniversary. They told DailyMail.com in a joint statement: 'After much thought and careful consideration, we have made the difficult decision to divorce.

'We go forward with love and friendship for one another and a commitment to co-parenting our children whose privacy we ask to be respected during this difficult time. This will be our only comment on this private, family matter. Thank you for understanding.' 

Daddy duty: Ben was spotted at a pet store in Atlanta with daughter Violet on Sunday. The actor recently adopted a puppy for the family

Daddy duty: Ben was spotted at a pet store in Atlanta with daughter Violet on Sunday. The actor recently adopted a puppy for the family

Divorcing: The Hollywood power couple announced their separation on June 30, a day after their 10th wedding anniversary. They are seen here in March 2014 at the Vanity Fair Oscars party

Divorcing: The Hollywood power couple announced their separation on June 30, a day after their 10th wedding anniversary. They are seen here in March 2014 at the Vanity Fair Oscars party

 

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

By posting your comment you agree to our house rules.

Who is this week's top commenter? Find out now