Naomi Watts is left heartbroken as she shares devastating family news

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Naomi Watts has lost her beloved grandmother at age 101. 

The Watcher star, who is married to actor Billy Crudup, took to Instagram on early Monday morning to share the heartbreaking news alongside a gallery of images. 

In the first frame, her beloved grandmother is seen holding up a telegram from King Charles brandishing the royal seal.

In two other frames, Naomi is seen celebrating her nan's 100 milestone with family and friends. 

Naomi offered sweet words as she paid tribute to her paternal grandmother.  

'Our Granny Watts made it to 101 and a half,' began Naomi. 

'She got her letter from the King to celebrate her century, last night she rested in peace. RIP,' she continued alongside a pink love heart emoji.

The sad news comes after Naomi lost another grandparent earlier this year.

In August, Naomi shared how her 'nanna' Nikki Roberts had passed away, three weeks after having a stroke.

She also paid tribute to her 'no-nonsense' grandmother in a lengthy tribute.

She told how her grandmother had lived until her 99th birthday after suffering a stroke, achieving her goal of having one last party with all her family members.

Sharing one picture featuring four generations of her family, Naomi praised her grandmother's enduring legacy and admitted it is an emotional time for her family.

'My darling Nanna has left this world but her spirit will never leave us,' the Mulholland Drive star began the touching post.

'I'm truly blessed to have had the most wonderful relationship with her. She is such a huge part of who I am: her core values, her work ethic, and her mischievous humor and joy of life.'

'My mum and aunts are all in pieces today, but we know what a great life she had,' Naomi continued.

'She just kept cracking on because she loved her life and her family. She lived three more weeks after a massive stroke because, in full beast mode, she showed us that when she was finally ready to 'peg it - she'd peg it'.

'She had one more goal to meet. Her 99th birthday!! One more party. One more family gathering.'

Ending the emotional post, Naomi praised Nikki for her humour and 'no-nonsense attitude.'

'I'll never forget her wicked laugh, her feisty spirit, her no-nonsense attitude, her no waste policy,' she exclaimed.

'She'd be trimming the mold off the bread and cheese: 'you don't need an expiration date— that's what a nose is for! May her stories and memories live on.'

The post was met with a massive outpouring of support as her famous friends and fans all sent their condolences.

Magnolia star Julianne Moore, was quick to comment on the heartfelt post with: 'I am so sorry for your loss. What a wonderful person.'

Big screen icon Glenn Close also chimed in with a sweet sentiment.

'She's laughing with the angels,' she wrote. 'How blessed your family is to have had her.'

Pulp Fiction star Rosanna Arquette sent her sincere condolences writing: 'I'm so sorry for your loss you are blessed to have had her guide your life and inspire you.'

Selma Blair also commented: 'I am so sorry for your loss. May her memory be a blessing.'

Her Australian friends Rebecca Gibney Natalie Imbruglia and Teresa Palmer also offered their thoughts as they rallied around Naomi.