Matt Damon and Chris Hemsworth are known to be close friends.

And the Hollywood superstars were paying tribute to another pal of theirs on Sunday, when they stepped out to celebrate aviation tycoon Paul O’Brien’s 𝐛𝐢𝐫𝐭𝐡day.

The group gathered at The Beach restaurant in Byron Bay, NSW, for festivities, along with a host of A-list guests

The attendees included US Billionaire Ted Waitts and his wife Michelle Merkin, Matt’s wife Luciana Barosso, Chris’ wife Elsa Pataky, and brother Luke Hemsworth with his wife Samantha.

Paul’s new fiancée, KIIS FM host Lauren Phillips, was also on hand, showing off her massive diamond ring after announcing the pair’s engagement last week.

Matt Damon (pictured) and Chris Hemsworth are known to be close friends

And the Hollywood superstars were paying tribute to another pal of theirs on Sunday, when they stepped out to celebrate aviation tycoon Paul O’Brien’s 𝐛𝐢𝐫𝐭𝐡day. Chris Hemsworth is pictured

Elsa Pataky was seen talking to Matt Damon’s wife, Luciana Barroso. Both pictured

Chris kept things casual in a checked blue and white shirt over a simple T-shirt, paired with khakis and sneakers.

Elsa looked chic in a skintight lavender toned mini dress with racy cut outs at the bust and midriff.

She carried a designer crossbody bag in off white leather and white slouched boots, as well as designer sunglasses.

Matt, who strode into the shindig carrying a stack of 𝐛𝐢𝐫𝐭𝐡day gifts, looked relaxed in a flannel shirt and jeans.

The group gathered at The Beach restaurant in Byron Bay, NSW, for festivities, along with a host of A-list guests. Paul O’Brien is pictured

Paul’s new fiancée, KIIS FM host Lauren Phillips (left) also attended the event

She was showing off her massive diamond ring after announcing the pair’s engagement last week

Lauren looked chic in a cream shirt dress, while carrying a straw and leather handbag

She let her diamond ring be her main accessory

The crowd of VIPs had arrived at the venue on a chartered coach, with Paul personally overseeing the arrivals

Lauren walked along with her fiancé Paul, who was dapper in a dark blue dress shirt and white jeans

Lauren looked chic in a cream shirt dress, while carrying a straw and leather handbag. She accessorised her look with her blinding diamond ring.

She walked along with her fiancé Paul, who was dapper in a dark blue dress shirt and white jeans.

The crowd of VIPs had arrived at the venue on a chartered coach, with Paul personally overseeing the arrivals.

TV and radio presenter Lauren announced her engagement to Paul live on-air last Monday, telling her co-host Jase Hawkins about their surprise proposal in Mykonos.

Chris kept things casual in a checked blue and white shirt over a simple T-shirt

Elsa looked chic in a skintight lavender toned mini dress while Luciana rocked boho chic

Elsa’s look featured racy cut outs at the bust and midriff

Elsa carried a designer crossbody bag in off white leather

Chris held onto his wife’s hand as they strolled into the venue

Chris added to his dressed down look with khakis and sneakers

Matt, who strode into the shindig carrying a stack of 𝐛𝐢𝐫𝐭𝐡day gifts, was also relaxed in a flannel shirt and jeans

O’Brien runs high-end aviation charter group AVMIN and has several celebrity clients, including Matt, his wife Luciana, Chris and his wife Elsa.

‘We went to Europe for the holidays. We had a few days in Rome just the two of us and I thought if he was going to propose, it would’ve been the two of us,’ she began.

‘Then we went to Mykonos and met up with all of our friends and turns out I was the only person who didn’t know about it.

‘He proposed in front of all our friends. I had no idea and then next minute he was down on one knee.’

The attendees included US Billionaire Ted Waitts and his wife Michelle Merkin

Also there was Matt’s wife Luciana Barosso

Chris’ brother Luke Hemsworth was in attendance with his wife Samantha

O’Brien runs high-end aviation charter group AVMIN

He has several celebrity clients, including Matt, his wife Luciana, Chris and his wife Elsa

TV and radio presenter Lauren announced her engagement to Paul live on-air last Monday

Lauren said the public proposal was such a surreal experience that at first she thought Paul was teasing her.

‘I think I thought he was joking. It was an out of body experience. I don’t think I even looked at the ring.

‘I just hugged him and cried and then we stood up and we all celebrated.’

The notoriously private couple have been dating since early 2020 and now live together in Byron Bay.

Lauren told her co-host Jase Hawkins about their surprise proposal in Mykonos

She said the public proposal was such a surreal experience that at first she thought Paul was teasing her

‘I think I thought he was joking. It was an out of body experience. I don’t think I even looked at the ring,’ she said

‘I just hugged him and cried and then we stood up and we all celebrated,’ Lauren continued

Elsa finished her look with white slouched boots, as well as designer sunglasses

Lauren started dating Paul while she was living in Melbourne at the start of the Covid pandemic.

Meanwhile, Chris and Matt have enjoyed a bromance for many years.

They have been friends for over a decade and co-starred in three films: Thor: Love and Thunder (2022), Jay and Silent Bob Reboot (2019), and Thor: Ragnarok (2017).

‘We became friends around the time I started to work, and I’ve really benefited from watching how he handles himself,’ Chris told GQ back in 2014.

Lauren started dating Paul while she was living in Melbourne at the start of the Covid pandemic in early 2020

The notoriously private couple now live together in Byron Bay

Meanwhile, Chris and Matt have enjoyed a bromance for many years

They have been friends for over a decade and co-starred in three films: Thor: Love and Thunder (2022), Jay and Silent Bob Reboot (2019), and Thor: Ragnarok (2017)

‘We became friends around the time I started to work, and I’ve really benefited from watching how he handles himself,’ Chris told GQ back in 2014

‘Matt’s just a normal guy who has the movie-star thing figured out.’

While speaking with Nova’s Fitzy and Wippa in recent years, Matt, was happy to dish on his relationship with Australian pal Chris.

‘Hemsworth is a great friend of mine,’ the bonafide movie star shared to the radio hosts at the time.

‘I’m really tight with him and his wife and the kids,’ he added.

‘Matt’s just a normal guy who has the movie-star thing figured out,’ Chris said. Luke Hemsworth is pictured

While speaking with Nova’s Fitzy and Wippa in recent years, Matt, was happy to dish on his relationship with Australian pal Chris

‘Hemsworth is a great friend of mine,’ the bonafide movie star shared to the radio hosts

‘I’m really tight with him and his wife and the kids,’ Matt added

When the radio hosts quizzed the Bourne Identity actor on his friendship with the Thor star, Matt did not hold back, especially when it came to the comparison in their surfing abilities

When the radio hosts quizzed the Bourne Identity actor on his friendship with the Thor star, Matt did not hold back, especially when it came to the comparison in their surfing abilities.

‘No, no, no,’ Matt joked when asked whether he would be seen surfing alongside Chris.

‘I don’t want to surf with them [Chris’ family], just because I’m a horrible surfer,’ he shared while laughing.

‘Luke can surf too,’ the star added while referencing Chris and Liam’s older brother, who also acts.

‘No, no, no,’ Matt joked when asked whether he would be seen surfing alongside Chris

‘I don’t want to surf with them [Chris’ family], just because I’m a horrible surfer,’ he shared while laughing

‘Luke can surf too,’ the star added while referencing Chris and Liam’s older brother

Matt has been married to Luciana since 2005 and they have four daughters together

Chris and Elsa have been married since 2010 and have three kids, a daughter and twin sons

The couple live in a $30 million dollar mansion in the seaside town of Bryon Bay which is a favourite with celebrities

Matt has been married to Luciana since 2005 and they have four daughters together.

Chris and Elsa have been married since 2010 and have three kids, a daughter and twin sons.

The couple live in a $30 million dollar mansion in the seaside town of Bryon Bay which is a favourite with celebrities.

Matt, his wife and 𝘤𝘩𝘪𝘭𝘥ren pay frequent visits to the region to holiday with Chris and his family.

Matt, his wife and 𝘤𝘩𝘪𝘭𝘥ren pay frequent visits to the region to holiday with Chris and his family