Australian-born Hollywood star Chris is the middle child of three boys - all of which are actors. His elder brother is former Neighbours star Luke and his younger brother is The Hunger Games star Liam.
Thor star Chris, who plays a lead role in new movie The Huntsman: Winter's War told Graham Norton that he is often mistaken for his younger sibling.
"Now I have a beard it happens more," Chris said. "The first time was at the Star Trek premiere. It was the first big thing I had done and I remember thinking, 'Wow, this is the beginning of my career,' and a bunch of people were there and they are like, 'Chris, Chris, Chris,' and then ran straight passed me to Liam.
"I thought he was going to correct them but just winked at me and started signing autographs! That was my first little brush with fame!"
Pretty funny, right?
Chris rose to fame as school boy Kim Hyde in the Australian soap Home and Away from 2004 to 2007. Since then, he's made a successful transition from soap star to Hollywood hunk starring in a string of blockbuster movies - and he also has a Sexiest Man Alive title under his belt.
Talking about working with Jessica Chastain, Charlize Theron and Emily Blunt in The Huntsman: Winter's War, Chris joked: "It was great – there was a lot less testosterone!
"It was a different chemistry but a lot of fun with three incredibly talented and intimidating women – I loved it!"
The Graham Norton Show, BBC One 25th March 10.35pm
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