The Aussie stars both auditioned for the Marvel Comics lead, but it was Star Trek actor Chris who triumphed after winning over British director Kenneth Branagh with his recital of a speech from Shakespeare play Henry V.
The Last Song star Liam Hemsworth previously brushed off the snub, saying: "I got flown over (to Los Angeles) to do a screen test for Thor which my older brother ended up getting. We had a fight, a big one. No, I'm happy for him to get something. As long as a Hemsworth is throwing that hammer around, then we're good."
But it appears Liam isn't completely over losing out to his brother - Chris, 27, claims relations are still frosty.
He tells the New York Daily News, "Christmas dinner was very awkward. We haven't spoken since."