Liam Hemsworth poses for selfies with fans at Western Australia's Derby Airport... amid rumours that his brother Chris and Matt Damon are both in the Kimberley too

Chris Hemsworth has made no secret of his love for Western Australia's Kimberley region, even hailing it as his favourite fishing destination in 2019.

And now his little brother Liam Hemsworth has popped up in the area, with the 31-year-old Hunger Games star mobbed by fans at Derby airport on Monday.

The Last Song heartthrob rocked a low-key look of a simple white T-shirt and an Akubra-style hat as he posed for selfies with eager locals. 

The surprise appearance follows swirling rumours that Thor star Chris, 37, 'was staying at the luxurious and remote Berkeley River Lodge', according to Perth Now.

There also appeared to be some evidence that the brothers' Hollywood pal Matt Damon was in the area too, given his Bombardier Global 7500 jet was reportedly sitting on the Derby runway.

However, Perth Now also suggested Liam may have borrowed the aircraft for his trip to the western state. 

Meanwhile, Chris has been busy in recent months filming the fourth instalment of the Thor franchise in Sydney.

On Saturday, the Australian actor shared a cheeky selfie from the makeup chair on set, alongside his friend and Thor: Love and Thunder director Taika Waititi.

In the photo, Chris pulled a serious expression while posing in a Thor branded cap and a long blond wig.

Next to him was 45-year-old Kiwi director Taika, who wore a pair of trendy sunglasses for the photo.

Chris joked in the caption: 'They really squeezed the budget for the official Thor Love & Thunder poster but the message is clear, plenty of love and plenty of thunder.'

'Album drops soon...again...,' he quipped, tagging Taika and Marvel Studios.

This comes after Chris recently reflected upon how far his career has come over the past decade.

Earlier this week, he posted an throwback photo of himself and co-star Tom Hiddleston on Instagram, showing them reading their scripts for the first Thor film, which was released in 2011. 

'This year marks the 10th anniversary of Thor when two unknown lads were given the keys to the kingdom,' Chris wrote in the caption.

'It's been a hell of a ride and we clearly haven't aged a day,' he joked, making sure to tag Tom's account.

The former Home And Away star also shared a Vulture article written in 2009 that referred to himself Tom as 'no name actors'. 

These 'virtual unknowns' would go on to become two of Hollywood's most highly-paid actors.

Thor: Love and Thunder is currently scheduled for release on May 6, 2022.