But Chris' fans were left shocked when they realised her age upon seeing her youthful appearance.
'Your mum is 60?!! 😲 wow she looks great! 🙌🏽🙌🏽" one remarked.
"Are u kidding me??... She is 60! No way... She seems to be younger sis..... Omg," another stated.
"Wait what?! She 60?? She look so damn young!!" a third exclaimed.
Even the rest of the Hemsworth family can't help but admire Leonie's age-defying beauty.
“She just looks amazing! She's 60 almost, 59, and every year looks even better," Chris' wife Elsa Pataky remarked to Body + Soul, adding that the Hemsworth matriarch follows a strict intermittent-fasting regime and was even doing it before it was cool.
“She started with one day of fasting, once a week, and then she started with the 15-16 hours of fasting.”
Chris wasn't the only brother to post a tribute on their mum's special day.
Youngest child Liam Hemsworth shared a black and white photo of himself with Leonie with his 13.7 million Instagram followers along with a heartwarming message.
"Best mum ever. Best person ever. Love u endlessly. Happy birthday Lones ❤️❤️" he penned.
Teacher Leonie shares her three children with her husband and counsellor, Craig Hemsworth.
Though all three were born in Melbourne, when Liam was just a few years old, the family relocated to the Northern Territory, where Leonie and Craig worked on a cattle station.
“We’d wake up in the morning and literally say, ‘See ya, mum,’ and just disappear into the bush,” eldest brother Luke revealed on Jimmy Kimmel Live in 2016.
“I think as we got older, parents of kids we knew would gradually drop their kids off further and further away from our house.”