Luke Hemsworth and wife Samantha celebrate their 13th anniversary

He’s the lesser-known Hemsworth brother who prefers a life of relative anonymity to Hollywood superstardom.

But Chris and Liam’s eldest brother, Luke, offered fans a rare glimpse of his low-key lifestyle on Wednesday as he celebrated his 13th anniversary to wife Samantha.

The Westworld actor, 40, shared a gallery of photos to Instagram showing the couple attending fancy dress parties, relaxing at home and hitting the beach.

‘We’ve laughed, cried, yelled, loved’: Luke Hemsworth (right) celebrated his 13th wedding anniversary by sharing a sweet tribute to his wife, Samantha (left), on Wednesday 

‘Thirteen long years!’ wrote Luke

‘We’ve laughed, cried, yelled, loved, been scared, scared others and laughed more. Here’s to another 13 long years.’

‘May they always be filled with epicness… and great wigs,’ Luke concluded, referring to several photos of the couple posing in flamboyant wigs.

Famous family: Luke (right) is the eldest sibling of his famous Hemsworth brothers - Chris, 36, (centre) and Liam, 30 (left)

Famous family: Luke (right) is the eldest sibling of his famous Hemsworth brothers – Chris, 36, (centre) and Liam, 30 (left) 

Opening the family album: Posting to Instagram on Wednesday, the Westworld actor, 40, shared a gallery of rare photos showing the low-key couple attending fancy dress parties, relaxing at home and hitting the beach together

Opening the family album: Posting to Instagram on Wednesday, the Westworld actor, 40, shared a gallery of rare photos showing the low-key couple attending fancy dress parties, relaxing at home and hitting the beach together 

Light-hearted romance: Luke and Samantha were pictured pulling funny faces in many of their photos together

Light-hearted romance: Luke and Samantha were pictured pulling funny faces in many of their photos together  

Wigging out! There were several images of the couple posing in fancy dress and flamboyant-looking wigs. Pictured with a friend (centre)

Wigging out! There were several images of the couple posing in fancy dress and flamboyant-looking wigs. Pictured with a friend (centre) 

Samantha also paid tribute to her husband on Wednesday by sharing her own gallery of family photos. 

The gallery contained photos of the pair posing with Australian animals, attending a party and cuddling up to their four children: daughters Holly, 11, Ella, 10, Harper Rose, 8 and son Alexandre, 7.

’13 years married to this incredible human @hemsworthluke,’ she began her caption. 

Loved-up: Samantha also paid tribute to her husband on Wednesday by sharing her own gallery of family photos

Loved-up: Samantha also paid tribute to her husband on Wednesday by sharing her own gallery of family photos

Animal attraction! 'Let’s keep laughing, loving, saving wildlife and living our best lives #happyanniversary #love #bestperson,' she cooed

Animal attraction! ‘Let’s keep laughing, loving, saving wildlife and living our best lives #happyanniversary #love #bestperson,’ she cooed 

‘Let’s keep laughing, loving, saving wildlife and living our best lives #happyanniversary #love #bestperson,’ she cooed. 

Luke and Samantha are extremely private, with Samantha avoiding the spotlight unless it’s to support her husband on the red carpet.  

Little is known about how they met, or where they tied the knot back in 2007.   

Down to earth: Luke and Samantha are extremely private, with Samantha avoiding the spotlight unless it's to support her husband on the red carpet

Down to earth: Luke and Samantha are extremely private, with Samantha avoiding the spotlight unless it’s to support her husband on the red carpet

Private: Little is known about how they met, or where they tied the knot back in 2007

Private: Little is known about how they met, or where they tied the knot back in 2007

Judging from their Instagram accounts, Luke and Samantha live an outdoorsy lifestyle, often spending days at the beach, hiking through rainforests and visiting wildlife sanctuaries. 

The couple, who who spent almost a decade living in Los Angeles, recently moved to Byron Bay to be closer to Luke’s parents, Leonie and Craig, and brothers Liam and Chris.

‘It’s a better quality of life, for sure,’ Hemsworth told Stellar magazine in April. 

Celebrities, they're just like us! Judging from their Instagram accounts, Luke and Samantha live an outdoorsy lifestyle. Pictured with their children on Lord Howe Island in October

Celebrities, they’re just like us! Judging from their Instagram accounts, Luke and Samantha live an outdoorsy lifestyle. Pictured with their children on Lord Howe Island in October 

Eco-warriors: The couple also share a passion for animal conservation, and often visit wildlife sanctuaries together

Eco-warriors: The couple also share a passion for animal conservation, and often visit wildlife sanctuaries together 

‘We had to make a decision about the kids, because if we’d stayed in LA and Westworld went into Season Four, then we’d be locked in for another couple of years.’

He continued: ‘It’s best for the kids. Mum and Dad can walk to the house, Chris is about a mile away, and I think Liam’s going to be there soon, too.

‘The kids are outside in bare feet, they’re on the beach and not watching much TV at all any more.’  

Back Down Under! The couple, who who spent almost a decade living in Los Angeles, recently moved to Byron Bay to be closer to Luke's parents, Leonie and Craig, and brothers Liam and Chris

Back Down Under! The couple, who who spent almost a decade living in Los Angeles, recently moved to Byron Bay to be closer to Luke’s parents, Leonie and Craig, and brothers Liam and Chris

Bohemian lifestyle. 'The kids are outside in bare feet, they're on the beach and not watching much TV at all any more,' Luke said of his family's new life in Byron Bay

Bohemian lifestyle. ‘The kids are outside in bare feet, they’re on the beach and not watching much TV at all any more,’ Luke said of his family’s new life in Byron Bay