'No way!' Chris Hemsworth's fans are shocked to learn his mother Leonie's real age - and insist she looks young enough to be his SISTER in birthday photos

The Hemsworth brothers - Chris, Liam and Luke - are widely regarded as some of Hollywood's most genetically-blessed stars.

And it's clear the apple doesn't fall far from the tree.

Thor actor Chris, 37, left fans gobsmacked on Sunday when he shared photos of his youthful-looking mother Leonie to celebrate her 60th birthday.

'No way she is 60! Chris Hemsworth (right) left fans stunned on Sunday when he shared photos to Instagram of his youthful-looking mother Leonie (left) as she celebrated her 60th birthday

'No way she is 60! Chris Hemsworth (right) left fans stunned on Sunday when he shared photos to Instagram of his youthful-looking mother Leonie (left) as she celebrated her 60th birthday 

'Happy 60th to the greatest mum on earth! Love ya, mum,' he wrote in the caption, prompting many fans to say that Leonie looks young enough to be his sister.

'Are you kidding me? She is 60! No way. She seems to be younger sister. Oh my god,' one baffled follower wrote.

'She looks like your sister... happy birthday to her,' another agreed.  

Party on! In the photos, the mother-son duo posed together in colourful attire as they partied at Leonie's tropical-themed birthday bash

Party on! In the photos, the mother-son duo posed together in colourful attire as they partied at Leonie's tropical-themed birthday bash

What's her secret? Fans couldn't help but comment on how young Leonie looked in the photos

What's her secret? Fans couldn't help but comment on how young Leonie looked in the photos

A third confused fan wrote: 'Wait, what?! She is 60? She looks so damn young!' A fourth noted: 'Clearly she passed on the good genes.'

In the photos, the mother-son duo posed together in colourful attire as they partied at Leonie's tropical-themed birthday bash on Sunday.

Clad in a grey maxi dress and floral headband, Leonie could easily have passed for a woman celebrating her 30th birthday.

How does she do it? Clad in a grey maxi dress and floral headband, Leonie could easily have passed for a woman celebrating her 30th birthday

How does she do it? Clad in a grey maxi dress and floral headband, Leonie could easily have passed for a woman celebrating her 30th birthday

Chris' wife, Elsa Pataky, revealed in May that a 'strict' intermittent-fasting diet was the secret behind Leonie's age-defying appearance.

'Intermittent fasting' refers to an eating pattern that cycles between periods of voluntary fasting and eating, and is commonly used as a weight-loss strategy. 

Speaking to Body + Soul, the Spanish actress explained: 'The first person we knew who started [intermittent fasting] really strict was Chris' mum, actually.'

'She just looks amazing! She's 60...and every year looks even better,' she added. 

Elsa explained that Leonie had started with one day of fasting per week, before gradually building up the frequency and length of her fasting periods.

Ageless: Chris' wife, Elsa Pataky (right), revealed in May that a 'strict' intermittent-fasting diet was the secret behind Leonie's (centre) age-defying appearance. Left: Chris Hemsworth

Ageless: Chris' wife, Elsa Pataky (right), revealed in May that a 'strict' intermittent-fasting diet was the secret behind Leonie's (centre) age-defying appearance. Left: Chris Hemsworth

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