Liam Hemsworth has sent fans of his brother Chris into a hot sweat after sharing a topless pic of the Thor star enjoying his 42nd birthday celebrations on Monday.

The photo framed the imposing siblings alongside eldest Luke, with the gathering for a a luxury boat cruise off the coast of Ibiza.

“Happy birthday brother Chris! Thanks for always being such a wonderful legend. Never change. I hope I have abs like you when I grow up. Love you,” Liam captioned the post.

The brothers were accompanied by A-list mates Matt Damon, Rita Ora, and Taika Waititi.

Capturing the attention of Liam’s 12 million Instagram followers, the post also drew reactions from several high profile personalities.

“You animals. Love it,” actor Scott Eastwood commented.

Italian singer and actress Diana Del Bufalo add

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