Euphoria actress Sydney Sweeney had the internet on its knees as she stripped to a tiny green swimsuit.

The HBO star posed alongside fellow actor Kaylee McGregor in the back seat of a car in matching swimwear, with Sydney rocking a khaki one-piece with a daring neckline that plunged to her mid-chest. She clutched at her boobs and left her strong thighs bare as she stuck out her tongue for a cheeky photoshoot.

With her blonde hair falling loose around her shoulders, Sydney added a pair of dark sunglasses and a delicate gold necklace around her throat. Kaylee, meanwhile, rocked a royal blue bikini emblazoned with white and orange flowers, and a seashell choker around her neck.

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With her own dark blonde tresses worn in waves, Kaylee added a pair of light brown shades as she matched Sydney’s expression with her tongue out.

Sydney Sweeney
Sydney Sweeney clutched her boobs in a plunging swimsuit

The wild snapshots didn’t end there. In the next frame, Sydney could be seen sliding down a waterfall into a lake, looking fearless as she let the frothy white water carry her over a huge drop. She also posed alongside a field of wallabies and raised her arms high as she posed on a huge jagged rock by the ocean.

“Sweet home Australia,” she captioned the photoset on Instagram. Frenzied fans soon turned out in force in the comments section, with one writing: “How TF you always look so good?!”

Another echoed: “Sydney in Sydney is another universe!” While a third social media user quipped: “Breast, I mean best, Hollywood actress.”

Sydney Sweeney
The star later slid down a waterfall in a daring stunt

Someone else said: “This is the kind of content that feeds families.” Even musician Diplo was on hand to write Sydney a message, penning: “The picture of the beach is magnificent.”

Being in the water has helped Sydney maintain her incredible figure over the years. Opening up to Women’s Health, she explained: “The moment I could walk, my mom put me on what's called a U-board to learn how to [jet]ski. I remember that whenever we would go by the docks of my grandma's or my cousin's house, I'd wave. I felt so cool because I could take off one hand. That's my earliest memory of skiing, but I've been doing it as long as I can remember.

"It's a lot of upper body strength, it's balance, it's core, it's legs – you get tired really fast. I see such a change in my body after an entire summer. My arms are stronger, more sculpted. My abs are rock solid. But I never look at it as a workout because it is so much fun.”

Sydney Sweeney
Sydney has been dogged with 'unfair' affair rumours

It comes after Sydney’s Anyone But You co-star Glen Powell finally broke his silence on affair rumours which dogged the pair while Sydney is engaged to Jonathan Davino. He told Men’s Health: “When all that stuff happened, you know, publicly, it felt disorienting and unfair.

“But what I'm realising now is that's just a part of this gig now.” After finding fame in Top Gun: Maverick, he admitted he’s looking for love while he can.

“When the sun is shining, you gotta make hay. And you gotta chase this while you got it. And on a romantic level, you gotta find a teammate who is down for that adventure, down for that uncertainty, down for that thing. It's a lot to deal with. Honestly, I really try to be a great partner. When I love, I love hard. I also understand that the speed and uncertainty of my life is a very hard thing to put up with."