The unofficial AO dress code: All the celebrities who have sported all-white courtside looks
1 of 23Attribution: Supplied: Polly Hanning
Crisp tennis-whites have long been a tradition at tournaments that dates back centuries.
Wimbledon has long-held a strict all-white dress code for its players (as have many private clubs around the world).
And while spectators aren't included in the dress code, tennis whites have become a mainstay on and off the court with many adhering to the unofficial dress code at tournaments around the globe.
With the Australian Open under way this month in Melbourne many spectators have taken to the stands sporting their very own tennis inspired, all-white looks.
Stay on to see the celebrities nodding toward the time-honoured tradition.
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Businesswoman and influencer Hannah Dal Sasso made a statement from the stands with her crisp all-white look.
The model and influencer was spotted watching the singles matches on Day 1 from one of the best seats in the house, attending the AO as a guest of fashion retailer Selfie Leslie.
Dal Sasso wore a white, backless halter top and matching skirt for a day at the tennis, styling her hair in a chic loose updo.
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Social media influencer and business owner Costeen Hatzi looked the part wearing this all-white, tennis inspired look at day one.
Hatzi, who is dating tennis star Nick Kyrgios, paired a structured white tennis dress with some simple heels and a black handbag for the event.
Since meeting Kyrgios and building her business, Hatzi's career has gone from strength to strength over the last three years.
She recently spoke with 9honey about her experience building her business and profile while travelling the globe to support Kyrgios' career.
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'The most famous woman in men's tennis' Morgan Riddle opted for a simple yet stunning halterneck white dress for day one of the Australian Open.
She has jetted Down Under in support of her partner, World No. 4 Taylor Fritz.
She paired the look with a simple 'do, red nails and pearl earrings.
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For another look all-white look, Riddle wore this show-stopping jumpsuit.
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One Mile founder, YouTuber and influencer Sammy Robinson also opted for white.
She wore a mini dress paired with black accessories.
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Aussie tennis star Priscilla Hon served up an iconic set.
She paired a slouchy white coordinated shirt and trousers with a lace crop and heels.
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Designer Nadia Bartel looked the part opting for a sporty chic ensemble.
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Canadian tennis player Ayan Broomfield stunned in an all-white textured set.
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Influencer and entrepreneur Paige Lorenze channelled the unofficial dress code of the AO, opting for a white singlet top and a matching low-rise skirt.
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Gina Karsay and Darren McMullen also stepped out in matching white looks.
Karsay opted for a white tennis-inspired skirt which she paired with a button-up and a sweater draped over her shoulders.
McMullen complemented her in a white polo which he paired with tan chinos.
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Maria Thattil never misses with her Australian Open looks and this one is no exception.
The author, actress and former Miss Universe stunned in an asymmetrical white mini.
Here she is pictured at Terrazza Aperol as she laps up the excitement of the 2025 Australian Open.
14 of 23Attribution: Instagram/Callum Hole
Fashion designer Sasha Morpeth and former Love Island star Callum Hole cut a stunning figure together as they coordinated in all white for a day at Melbourne Park on Thursday.
Morpeth paired a low-rise white skirt with a structured white top and a pair of matching kitten heels.
Meanwhile Hole opted for some white shorts and a button-up tee.
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Channel Nine personality Sylvia Jeffreys made a nod to the tennis whites fashion trend opting for a white tweed half-sleeve jacket that she paired with some tailored pants.
16 of 23Attribution: Steph Claire Smith/Instagram
KIC Founder and model Steph Claire Smith and her husband Josh Miller coordinated in white tops for an evening at day three of the Australian Open.
Smith, who is currently expecting her second child paired her white crop with some blue denim jeans and a pair of sunnies.
Miller opted for a pair of cargo shorts.
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Smith was also in the stands with a fellow Aussie icon.
She snapped this picture of model, influencer and former Miss Universe Australia Olivia Molly Rogers who also chose to wear white for the sporting event.
Rogers wore a crisp white Ralph Lauren shirt. She paired the structured top with some chunky gold earrings.
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Brooke Warne, the daughter of late great cricketer Shane Warne, did not miss a beat with her AO look.
She channeled a Wimbledon-esque look with structured trousers paired with a button-up vest and a crisp sweater draped over her shoulders.
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Former NRL star Nate Myles and his actress wife Tessa James have were spotted in the Ralph Lauren Marquee, dressed in complementary white ensembles.
James opted for a matching white l inen set while Myles paired some white dress pants with a structured Ralph Lauren shirt and a white sports cap.
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Aussie actor and TV host Rob Mills and his TV star fiancée Georgie Tunny coordinated in all white-looks for the event.
Here they are pictured inside the Emirates Marquee at the 2025 Australian Open on January 14.
Tunny paired a white tank with some white dress pants while Mills opted for white pants and an off-white tee.
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Champion runner Peter Bol also chose to honour the tennis whites trend with a summery white suit.
A deep green shirt peaks out from under his jacket for a pop of colour.