Two sons of Hollywood royalty surprised fans over the weekend with their unexpected friendship after being seen together in Los Angeles on Saturday.

Patrick Schwarzenegger — son of Terminator legend Arnold Schwarzenegger — and John Owen Lowe — son of Brat Pack star Rob Lowe — showcased their bright smiles as they walked the streets with a third friend.

Patrick, 31, showed off his naturally impressive biceps — unsurprising since his father was once Mr. Universe — dressed in a black tank top and matching pants as he took the lead.

John, 29, kept it casual in a navy T-shirt and gray joggers, trailing behind his neon-hatted buddy. 

The young stars appeared to be in high spirits, exuding confidence and star power as they strolled the sidewalk — with their Tinseltown pedigree shining through.

Their outing comes just weeks after proud papa Arnold defended his now-viral comments about Patrick’s full-frontal scenes in The White Lotus — including a head-turning mention of his son’s manhood.

Notably, Patrick’s mom is none other than journalist and Kennedy family member Maria Shriver, giving him a double dose of famous genes.

And he was clearly embarrassed by his 77-year-old father’s commentary during Variety’s Actors on Actors interview, posting on June 3: ‘Who the heck says weenie?’

‘Well I do,’ Arnold fired back during an appearance on Late Night with Seth Meyers a few days later. 

‘In the seventies, that’s what you said, you know? But maybe today they call it something else, I don’t know. What do they call it now?’ 

‘Weenie still works,’ host Seth Meyers replied. 

‘It still works, right?’ Schwarzenegger laughed.

Arnold went on to rave about his son’s breakout performance in the HBO hit 

‘Patrick just blew it out of the water. I mean, it was, like, really amazing, what he did on White Lotus, and the amount of attention he’s getting now.”

The former governor added that the fan attention he used to receive is now being redirected — to Patrick. 

‘Now everything changed. Everything is about Patrick, Patrick, Patrick,’ he grinned.

‘Women used to give me their cards — now they’re asking me to pass them on to him.’

Patrick is already capitalizing on that attention. 

In June, he landed his next big gig opposite fellow nepo baby Margaret Qualley in Love of Your Life, a romantic drama from director Rachel Morrison and Amazon MGM Studios, set to begin filming in Europe this August.

‘I love love love this script! Y’all will love this!’ Patrick gushed on Instagram. 

‘Such a beautiful story. So thankful for the opportunity to work opposite Margaret, and with these incredible producers Ryan Gosling and Jessie Henderson and Amazon MGM. Lastly to Rachel Morrison. Can’t wait to collaborate with you. Thank you for this opportunity. If you haven’t seen her other work — you should!’

Meanwhile, the other half of the nepo bromance — John Owen Lowe — has been making headlines with his dad as well. 

The father-son duo recently sent temperatures rising with a shirtless selfie that showed both men tanned, toned, and flexing for the camera while rocking gold chains.

But fans were most surprised by something on Rob — a massive new tattoo on his arm, which seemed out of character for the squeaky-clean star.

Rob, ever the smooth talker, shrugged off the buzz to People: ‘If you’ve got it, flaunt it.’

‘Every once in a while, you’ve got to throw it down. You’ve got to be like, “Yeah, come on,”‘ he added. 

‘If you got it, flaunt it, use it or lose it, and it ain’t bragging if you’ve done it. Those are my three go-tos.’