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 on Wednesday by sharing a sweet tribute to his wife, Samantha (left) 

‘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 of the famous Hemsworth brothers. Pictured with Chris (centre) and Liam (left) on July 27, 2015, in Westwood, California

Famous family: Luke (right) is the eldest of the famous Hemsworth brothers. Pictured with Chris (centre) and Liam (left) on July 27, 2015, in Westwood, California

Opening the family album: 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

Opening the family album: 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

Light-hearted lovers: Luke and Samantha pulled funny faces in many of their photos together

Light-hearted lovers: Luke and Samantha pulled funny faces in many of their photos together

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

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

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

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

‘Thirteen years married to this incredible human,’ she began her caption. 

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

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

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

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

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

The Hemsworths are extremely private, and Samantha mostly avoids the spotlight unless she’s supporting 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: The Hemsworths are extremely private, and Samantha mostly avoids the spotlight unless she's supporting her husband on the red carpet

Down to earth: The Hemsworths are extremely private, and Samantha mostly avoids the spotlight unless she’s supporting 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, 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 his brothers, Liam and Chris.

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

Relaxed: Judging from their Instagram accounts, Luke and Samantha live an outdoorsy lifestyle, spending days at the beach, hiking through rainforests and visiting wildlife sanctuaries. Pictured with their children on Lord Howe Island in October

Relaxed: Judging from their Instagram accounts, Luke and Samantha live an outdoorsy lifestyle, spending days at the beach, hiking through rainforests and visiting wildlife sanctuaries. Pictured with their children on Lord Howe Island in October 

Eco-warriors: The couple share a passion for animal conservation

Eco-warriors: The couple share a passion for animal conservation

‘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 LA, recently moved to Byron Bay to be closer to Luke's parents, Leonie and Craig, and his brothers, Liam and Chris

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