Jessica and Ashley Hart mourn the tragic loss of mother Rae after being diagnosed with a neurological condition

Jessica and Ashley Hart mourn the tragic loss of mother Rae after being diagnosed with a neurological condition

Supermodels Jessica and Ashley Hart mourn the tragic loss of mother Rae after being diagnosed with a heartbreaking neurological condition

Jessica and Ashley Hart are mourning the tragic loss of their mother Rae after she passed away suddenly on Friday.

Rae Hart, 66, died of a rare degenerative neurological disease, ALS, which damaged the central nervous system and caused progressive muscle weakness.

The supermodel sisters returned to Melbourne indefinitely last year to help their mother through medical treatment, but since Rae’s diagnosis her health has declined rapidly.

Jessica and Ashley Hart are mourning the loss of their mother, Rae, who passed away suddenly on Friday

Jessica’s two children and her husband James Kirkham, former NASCAR driver, have also lived in Australia to support her and Rae.

Jessica, 36, and Ashley, 34, have referred to Rae as their rock multiple times throughout their careers.

As the sisters rose to fame, their mother was always supportive and created a strong bond between the three.

Jessica and Ashley (left) have referred to Rae (right) as their rock multiple times throughout their careers

Jessica and Ashley (left) have referred to Rae (right) as their rock multiple times throughout their careers

In 2015, Jessica and Ashley revealed to 60 Minutes that their mother struggled with being a single mom and moving around a lot after struggling through a troubled marriage.

Despite the move, the sisters always felt cared for, even saying that “she deserves a medal.”

According to Rae, the basic principles for getting through life were fresh sheets, fresh food, a hot shower and each other.

1674256613 592 Jessica and Ashley Hart mourn the tragic loss of mother

“A true warrior of love, whose incredible courage birthed her into the realm of spirits, she no doubt roars her greatness to the skies, and now showers us all with her expansive, deeply beautiful love.”

Both sisters took to Instagram to commemorate a gorgeous photo of their mother with a heartbreaking caption.

‘Our Divine Mother ‘Rae Janette Hart’ made her transition from this earthly plane. She passed away peacefully yesterday morning after a tremendous journey to fight ALS.

“A true warrior of love, whose incredible courage birthed her into the realm of spirits, she no doubt roars her greatness to the skies, and now showers us all with her expansive, deeply beautiful love.”

Jessica started modeling at the age of 14 and has become a global name through partnerships with Victoria’s Secret and Vogue.

She named her firstborn after her mother, Baby-Rae, and gave birth to a son named Glorious last year.

Both sisters took to Instagram to commemorate a gorgeous photo of their mother with a heartbreaking caption

Both sisters took to Instagram to commemorate a gorgeous photo of their mother with a heartbreaking caption

Jessica's two children and her husband, James Kirkham, former NASCAR driver, have also lived in Australia to support her and Rae (pictured here with her stepdaughter Wren).

Jessica’s two children and her husband, James Kirkham, former NASCAR driver, have also lived in Australia to support her and Rae (pictured here with her stepdaughter Wren).