PHOTOS: The best kits from Gauff, Rublev, Sabalenka, and more at Australian Open

With the year's first Grand Slam already well underway, the opening days of the Australian Open have doubled as a tennis fashion showcase.

New collections from major tennis labels like Nike and Adidas have been turning heads on the likes of Aryna Sabalenka and Stefanos Tsitsipas, while a few custom fits from some players-turned-fashionistas—think Coco Gauff and Andrey Rublev—are threatening to steal the attention.

From Alycia Parks new head-to-toe deal with Wilson to Rublev's signature Rublo style—plus standout looks from Gauff and Novak Djokovic—here are the outfits turning heads in Melbourne Park.

Last year's womens champion Aryna Sabalenka is back in Melbourne, and as always she's found a way to stand out from the rest of the pack in Nike's Melbourne 2024 collection. Sabalenka is wearing the Nike Court Dri Fit Slam Dress in "Gym Red" and matching Nike Air Zoom NXT shoes, forgoing the pastels from the collection in favor of a striking all-red look that's becoming Sabalenka's signature style.

The 25-year-old got her own custom Nike look for the first time at the 2023 US Open, a moment that was captured by Netflix cameras on the season 2 finale of "Break Point". The Belarusian went all the way to the final in the red-pink outfit that she said made her feel "like Barbie"—here's hoping she gets the same wear out of this outfit amid her first major title defense.

The rest of Nike's hopefuls, including Jannik Sinner and Frances Tiafoe, can be found wearing the Nike Melbourne 2024 collection.

Inspired by the host city's vibrant beeaches, the collection is defined by muted pastel hues of mauve and yellow with bold green and white for contrast. While some of the women's designs have been giving off Easter Bunny vibes, the collection's simple colors have been an ace for the guys in Melbourne.

For her first Grand Slam in her comeback from materinity leave, Nike cooked up one of the best looks of the tournament for two-time champion Naomi Osaka. Playing in Melbourne for the first time since 2022, Osaka rocked a black sleeveless high-neck dress that featured a shimmering snake skin cutout along the chest and skirt offset by a white stripe detail.

Unfortunately, tennis fans didn't have long to enjoy Osaka's custom kit after she bowed out with a 6-4, 7-6 (2) defeat to Caroline Garcia.

"I'm a little sad 'cause this outfit's really cool and you won't see it again," Osaka joked during an emotional press conference following her first-round defeat. "That's why I had to wear it in here."

Athletes represented by Adidas, like Jessica Pegula and Stefanos Tsitsipas, will be staying cool in the brutal Aussie heat with the help of some new technology built into the garments.

The Adidas SS24 Melbourne Collection is the first to feature "Airchill" technology in tennis apparel, and features a 26-piece range for men and women made from 100% recycled materials. Characterized by strategically placed loose-knit fabric made to optimize airflow, the collection comes in white and a calming "Green Spark" colorway.

For 10-time Australian Open winner Novak Djokovic, sponsor Lacoste has kept it simple with cool blues of the Lacoste x Novak Djokovic collection.

But eagle-eyed tennis fans were quick to spot one major detail on the world No. 1's Court FF NOVAK shoes—Asics added a "24" to the side heel, a reference to the Serbian's staggering Grand Slam singles trophy count.

Will we see a "25" shoe come Roland Garros?

In the year since Russia's Andrey Rublev launched "Rublo", his own clothing line, he's rarely rocked a dud kit—but this cool Australian Open outfit may just be one of his best designs yet.

Rublev breaks up a classic all-black oversized kit with pops of green and teal on his wristbands, headband and right shoulder sleeve, and completes the look with matching Nike Vapor Pro shoes.

"(I launched Rublo) because back then, they (Nike) couldn't re-sign Russian athletes after our contract ended," Rublev told Russian journalist Sofya Tartakova during the offseason. "Our relationship with Nike was great, and they offered a one-year deal with the option to sign a normal contract at the end of that year...

"I said that I don't plan to sign with anyone else no matter how much they offer me, but I want to try to create something of my own and play in it for a year and see how it goes."

New Balance designed an even bolder outfit to follow up the neon tennis-ball-inspired look Coco Gauff wore in New York on the way to the US Open title. “Primary Power” is the newest edition of her signature Coco CG1 shoe—as the name implies, it takes inspiration from colors like blue and yellow with pops of red against a classic white background.

Her matching kit, which came in two colorways featuring yellow and blue, gave some fans flashbacks of Serena Williams' 2016 Australian Open kit—but the bold spin on a heritage look is all Coco.

"(Y'all) know I love Serena (but) it wasn’t inspired by her kit,” Gauff clarified on social media. “She is a fashion queen (though)!!"

A heritage name in the sports world, Wilson is a relatively newer player in the tennis fashion game—but with outfits like these, expect more players to start rocking these head-to-toe looks at more events.

Rising American Alycia Parks recently switched from Asics to Wilson, joining a rapidly growing roster that began last year with Marta Kostyuk and now includes Nicolas Jarry, Peyton Stearns and more. In Melbourne, Parks is rocking Wilson's Winning Tennis Dress, as seen on Kostyuk, the brand's first ambassador in tennis, last year.

With a racquet and shoes to match the on-trend apparel, Wilson's head-to-toe deals are a rare 360 sponsorship in the world of tennis.

Leylah Fernandez has been Lululemon's global brand ambassador in tennis since 2022, bringing a wide range of the Canadian sportswear giant's cult classic apparel to the courts. But at the Australian Open, it's Fernandez's shoes that have grabbed attention.

The Canadian switched from Asics shoes to Roger Federer's On Running after she made the switch to Lululemon, but at last year's US Open Fernandez decidd to try something new. She tested Puma's Stewie 2 basketball shoes at the US Open, and hasn't looked back since.

“So far it’s been going super well,” Fernandez confirmed in 2023. “I’m feeling great on court. I love the shoes, I love the colors. It matches super well with the Lululemon outfit.

“I’m super happy that I get to experiment on a couple of things.”

Swedish fashion label J.Lindeberg may be more associated with golf than tennis, but its footprint in the sport is growing thanks to strategic sponsorships. Last year, they snapped up reigning Wimbledon champion Marketa Vondrousova, and during the offseason announced Chris Eubanks as its first ambassador in men's tennis.

The American showed off pieces of the brand's Pre-Spring 2024 Tennis Collection in Melbourne, along with matching Asics Gel-Resolution shoes.

“The combination of style both on and off the court is probably the biggest thing that drew me to J.Lindeberg,” Eubanks told Women's Wear Daily. “Seeing how much time and effort they put into both elements of style and fashion made me feel like this is a great fit. Then when I met the team and I saw how much passion everyone has for this partnership, I knew it was the right decision.”"