The Hollywood actress, 42, looked downcast as she took a casual stroll through the French capital in the midst of ongoing speculation she and Benjamin are headed for divorce following claims that the choreographer had cheated on the actress with a younger woman.
Natalie kept things casual in a light blue T-shirt and denim shorts, which she teamed with white trainers and a taupe crossbody bag.
The Black Swan star shielded her eyes with dark sunglasses as she attempted to keep a low profile during the low-key outing.
Natalie was also joined on the outing by son Aleph, 12.
Out and about: Natalie Portman was seen without her wedding ring on Monday as she ran errands in Paris amid husband Benjamin Millepied's cheating allegations
Just days previously, Natalie and Benjamin, 46, looked incredibly tense as they were pictured without their wedding rings during an outing in Paris, France, with their two kids.
The pair, who tied the knot in 2012, seemed somber as they went on a stroll together with their two kids, Aleph and Amalia, six, in the French capital.
Putting on a united front amid swirling rumors about their marriage, the two stars were spotted exiting their apartment and escorting their children to school.
While the two chatted to each other here and there, they appeared to walk side-by-side in silence for much of the stroll. Neither of them wore their wedding rings.
People reported at the time that his romance with Camille was 'short-lived' and is now 'over' - and that Benjamin was 'doing all he could' to get 'Natalie to forgive him and keep their family together.'
'He knows he made an enormous mistake and he is doing all he can to get Natalie to forgive him and keep their family together,' a source told the publication.
'Natalie is incredibly private and has no intention of playing this out in the media. Her biggest priority is protecting her children and their privacy.'
Tough time: The actress, 42, looked downcast as she took a casual stroll through the French capital in the midst of ongoing speculation she and Benjamin are headed for divorce
Troubled times: It is claimed that the choreographer had cheated on the actress with a younger woman (pictured in 2022)
In early August, however, an insider told Us Weekly that the pair were separating after failing to repair their relationship amid the bombshell cheating allegations.
'After news of his affair came out, they’ve been trying to work on their marriage but are currently on the outs,' the source said.
However, someone close to the actress told DailyMail.com days later that the reports of them ending their marriage were just 'rumors' and 'speculation' - and that no firm decision has been made.
The insider said that Natalie 'still doesn't know' if she wants to get a divorce, despite the rumors of his infidelity leaving her feeling 'powerless.'
'[Natalie] hates that [Benjamin's] infidelity has made her feel powerless,' said the source.
'She doesn't know if she can regain her power by staying with him or leaving him. It is really a struggle to have to continue to deal with it.'
Marriage woes: The actress was initially seen wearing her wedding ring shortly after the infidelity news broke but has been seen without it in more recent outings (seen in August)
Shock: In June, the couple's marriage was rocked by a report in a French magazine that Millepied, 46, had cheated on his wife with a 25-year-old climate activist named Camille Etienne (pictured)
But the source insisted that 'deep down,' Natalie and Benjamin are still 'really in love' and are trying to work through their problems.
'They are really taking it day by day because deep down they are really in love, and they are trying to figure out what has caused the distance between them,' they continued.
'She wants to stay with him, and he really wants to be with her. They both know that breaking up and staying together forever are still on the table and only time will tell what direction they will actually take.'
Natalie has been spotted without her wedding ring numerous times since the cheating scandal hit the web.
Relationship: Portman, a native of Jerusalem, Israel, and Millepied, who's from Bordeaux, France, share two children together: son Aleph,12, and daughter Amalia, six. Pictured: September 2022
Natalie and Benjamin - who originally met on set of Black Swan - were seen together for the first time following the rumors on August 20, when they attended the FIFA Women's World Cup final in Sydney, Australia together along with their son.
They're now back in France, where they share a home. The couple spent the early years of their marriage residing in Paris while Benjamin served as the director of the Paris Opera Ballet.
They then relocated to Los Angeles, purchasing a stunning Montecito mansion in 2017 for $6.5 million.
But they sold it in 2022 for $8 million, and Natalie revealed afterwards that the family was moving back to Paris full time.