Luke Hemsworth hilariously trolled his brother Chris on his 38th birthday with a photo of the wrong sibling.
The 40-year-old actor took to his Instagram to share a selfie with younger brother Liam but paid tribute to Chris in a joke post.
"Happy birthday brother @chrishemsworth !!" he wrote. "Love you mate will remember this trip the Kimberly region forever. So many memories together."
Chris, who plays Thor in the Marvel Cinematic Universe, went along with the joke.
"Yeh it was so much fun, kinda felt like a dream, kinda like I wasn’t even there," he commented.
Fans loved the photo and took it to the comment section to continue the fun.
"Chris kinda looks different here," one user said.
Another added: "Epic pic, Chris has never looked better ;)"
Luke wasn't the only one that pranked his Marvel brother for his big day.
The Hunger Games star, Liam, also posted a snap of him with his brother - but it was the wrong sibling yet again.
He shared a picture of him and Luke hanging out and getting soaked under a waterfall.
"Happy birthday @chrishemsworth," the actor wrote.
Chris - who finished filming the latest instalment of Thor - recently shared a snap of himself holding different animals.
It looks like he might be changing his career to something involving more wildlife.
The actor was holding a baby alligator and a rabbit while two parrots perched on his shoulder and a funky looking white chicken with a mohawk walked behind him.
One of his twin sons, Sasha or Tristan, 7, was also seen holding onto his doting dad as he sat on his shoulders.
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Chris joked in his caption: "A little side hustle I got goin', pet detective.
"Just returned these animals to its rightful owner. My son. He's trying to repay with love. I'd prefer cash."
One Marvel fan joked: "Is that Loki on your arm?" - possibly referencing an alligator of the same name - from Tom Hiddleston's popular Disney+ series, Loki .
The Melbourne native lives in the stunning home with his wife of 10 years Elsa Pataky, and their kids India, Tristan, and Sasha.
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