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Chris Hemsworth couldn't resist poking fun at his brother Liam as he celebrated his 32nd birthday on Thursday.
Posting to Instagram, the 38-year-old Thor star shared a series of photos of his younger brother, including one where he was shirtless.
Despite Liam's ripped abs and bulging biceps being on full display, Chris jokingly urged his brother to 'get in shape'.
Sibling rivalry: Chris Hemsworth (left) couldn't resist poking fun at his brother Liam (right) as he celebrated his 32nd birthday on Thursday
'Happy birthday @liamhemsworth hopefully this is the year you finally get in shape and take care of yourself,' he wrote.
He then offered The Hunger Games star a discounted membership for his popular fitness app, Centr.
'To help with your transformation I'm gonna