'Is that your DAD?' Liam Hemsworth's fans are left stunned by his 'ripped' father Craig

The Hemsworth brothers - Chris, Liam and Luke - are known across the world for their good looks and impressive physiques.

And on Wednesday, fans discovered that big muscles run in the family.

Liam Hemsworth shared an Instagram photo of himself, his father Craig and mother Leonie as they went hiking in Hollywood.

Liam's social media followers were left stunned by Craig's buff body, and in particular his enormous biceps. 

'If that's your dad, he's ripped!' wrote one enthusiastic fan. A similar comment read: 'Dang, those shoulder muscles on the oldie!'

Other fans praised the the entire family's good looks, with one writing, 'Jesus Christ, can (they) get any hotter!'

Liam, 28, captioned the snap: 'Climbed a mountain with the oldies this morning and came across a rattlesnake after telling my brother there were no rattlesnakes in this area! Ha!'

Chris Hemsworth, 34, sparked a similar internet frenzy when he shared a snap of his gorgeous mother Leonie attending the Commonwealth Games in April.

Before long, fans were insisting that Leonie looked more like his sister.

MailOnline