But as she filmed alongside Ewan McGregor the 44-year-old was unrecognisable as the actress who made her name as Vivian Ward in 1990’s Pretty Woman.

Her face stripped of makeup and dressed in dowdy clothing, Julia was transformed as she filmed emotional scenes for August:Osage County in in Bartsville, Oklahoma.

On set: Actress Julia Roberts and co-star Ewan McGregor were filming their new movie August: Osage County on Thursday

Hysterical performance: The brunette delivered a tearful act

The screen star – who in real life has three children with cinematographer husband Daniel Moder – layered up with a white shirt over a cream top and teamed it with loose blue jeans.

Her long brunette locks weren’t glamorously styled at all to play Barbara Weston, a character in a family that overcomes certain differences when their alcoholic patriarch goes missing.

During the intense scene Ewan held Julia’s hand with great anticipation, as they walked down to a boat dock to identify a dead body by a Sheriff.

Mumsy appearance: The Pretty Woman actress looked rather dowdy as she recorded the intense scene where they had to identify a dead body by a Sheriff

Upon seeing the dead body, Julia then bursts into tears, looking to be comforted by Ewan’s character Bill Fordham, as she continued to cry in his arms.

Chloë Moretz auditioned for the role of Jean Fordham, but lost to Abigail Breslin.

All an act: The group appeared to find something quite funny as they worked with Julianna Nicholson