THIS nepo-brother of a A-list actor gave fans a thrill when he stripped down to just a speedo.
The up-and-coming reality star showed off his rippling muscles as he took an outdoor shower - but can you guess who his famous sibling is.
The hunk in trunks is none other than Dylan Efron, brother of High School Musical alum Zac Efron, 37.
Dylan, who is the young sibling of the two at 33-years-old, showed off his impressive physique in the teeny tiny swimwear.
The actor's brother could be seen rinsing off in an outdoor shower, before shaking off the water, and strutting towards a swimming pool.
Fans went wild for the video, with one writing: "Now that's what I call taking a shower!"
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While another added: "Damn I'm old enough to be his mum!"
This cheeky fan said: "Zac who??!"
BECOMING A REALITY TV STAR
Recently Dylan has become a hit on reality TV.
He was a huge fan favourite when he appeared on The Traitors US earlier this year, and quickly became the season's heartthrob.
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While the show is famed for its backstabbing, treachery and lies, Dylan was just happy to be himself and go along for the ride.
Following his successful stint on The Traitors US, Dylan has now thrown his name into the ring for Celebrity Bear Hunt series two.
The outdoorsy star has been a lifelong fan of survivalist Bear and his A-list sibling Zac even filmed with him for a 2014 episode of Running Wild
Celebrity Bear Hunt launched on Netflix earlier this year and immediately became the number one most viewed show on the platform.
A second series seems inevitable, and Dylan said he would take on any challenge Bear sent his way.
Speaking exclusively to The Sun at F1 75 Live, he said: "Anything with Bear Grylls, sign me up. I've been watching him since I was a kid. I would do anything out there."
When it was put to him he might have to do some pretty stomach-churning things such as drinking his own urine, Dylan remained undeterred.
"Look, I'll do it," he smiled. "I've done a lot worse off camera."
It's not the only reality adventure show he'd be keen to test himself on.
Survivor and Celebrity SAS are another two programmes he believes he'd be well suited to tackling.
He said: "As a kid I always wanted to do Survivor just because I watched it growing up. But look, there's so many new shows, like Special Forces. Any of those where I'm going to go and have fun and challenge myself, I'd consider."
POSSIBLE MOVE INTO ACTING
A move into acting could also be on the cards, though he doesn't expect to be rivalling brother Zac anytime soon.
Launching his career with the hugely popular High School Musical franchise, Zac has gone on to star in the likes of The Greatest Showman, The Iron Claw, A Family Affair.
He also controversially portrayed and received acclaim for playing serial killer Ted Bundy in Extremely Wicked, Shockingly Evil and Vile.
Dylan said: "No, if anything, I have a huge respect for actors, like my brother. Because I know it's a skill set. I know I'm not going to play Ted Bundy in my first role.
"I can play a role that's similar to me. Like, Into the Wild, give me that role, I can crush that. Luckily, there are a lot of roles that are like me.
"I've changed my jobs a thousand times. I've been a writer, a stunt guy, a producer. I like to see what's next. I could see a little acting; my bread and butter is adventure shows. I love travelling and I love learning new things."
Dylan's certainly has had a varied career so far in his life.
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He's worked on the set of films such as Steven Spielberg's futuristic Ready Player One, The Accountant, Live by Night and war biopic American Sniper.
And he was a producer and starred in his brother Zac's travel series Down to Earth with wellness advocate Darin Olien.