But, three just became four thanks to Liam, who rewarded us with a glorious throwback photo of his father!
In celebration of his mum's birthday, the Hunger Games actor posted an adorable snap of his parents, captioning: 'I love you mum, you're the best! Dad you're an idiot.'
He's the absolute spitting image of all three brothers!
The Hemsworths are famously close, with mum and dad Leonie and Craig joining their sons on the red carpet on many occasions. Last year, Liam and Chris were joined by their dad at the MCG to celebrate the Western Bulldogs' first premiership since 1954.