On a balmy evening in late March 2025, the tennis world found itself buzzing not over a match point or a Grand Slam upset, but over a dazzling mirror selfie that lit up social media. Costeen Hatzi, the longtime partner of Australian tennis maverick Nick Kyrgios, turned heads with a glamorous new snapshot that radiated elegance and poise. Posted to her Instagram on March 31, the 24-year-old influencer stood before a mirror in a chic black ensemble, her reflection capturing a moment of understated sophistication. The image quickly drew gushing praise from Kyrgios himself and fellow tennis star Paula Badosa, spotlighting Hatzi’s growing presence both in the tennis sphere and beyond.
Hatzi’s latest photo wasn’t just a casual snap—it was a statement. Clad in a sleek black dress that hugged her frame, she paired it with a luxurious Chanel bag slung over her shoulder, her sunglasses perched atop her head like a crown. The setting—a sunlit sidewalk in Beverly Hills—only amplified the vibe of effortless glamour. “So gorgeous,” Kyrgios chimed in, his comment a virtual swoon complete with a heart-eyes emoji that spoke volumes about his adoration. Badosa, the Spanish world No. 11 whose own season has been marred by a nagging back injury, took it a step further. “You are stunning,” she wrote, her words a testament to the camaraderie that binds the tennis community, even off the court. The post racked up likes and comments in a flash, a digital ovation for a woman who’s become a fixture in the sport’s orbit.
The story of Hatzi and Kyrgios is one for the romantics. Their romance sparked in December 2021, born from an unlikely encounter over a mirror she was selling online. What began as a simple transaction—Kyrgios messaging her business account to inquire about pickup—blossomed into a whirlwind love story. “It was love at first sight,” Hatzi once recalled, a sentiment Kyrgios has echoed in his own way, often crediting her as his rock during a career marked by brilliance and turbulence. Since then, she’s been a constant at his side, jetting across the globe from Sydney to Wimbledon, her Instagram following ballooning from a modest 9,000 to over 180,000 as fans tracked their journey. Together, they’ve built a life that blends the grind of the tennis tour with flashes of extravagance—private jet rides, designer gifts, and now, a dachshund puppy named Boo who’s become their unofficial mascot.
For Kyrgios, Hatzi’s glamour is more than skin-deep. “She lifts me up and gives me motivation,” he’s said, a nod to how her presence has steadied a career once defined by fiery outbursts and early exits. The 29-year-old, currently nursing a wrist injury that’s kept him off the singles court in 2025, has leaned on her support as he plots a comeback, starting with the Brisbane International later this year. Their bond shone through in the selfie’s aftermath—his playful, smitten reaction a far cry from the brash persona fans once knew. Badosa’s admiration, too, hints at Hatzi’s knack for forging connections, her friendship with the Spaniard a bridge between the tour’s competitive edges.
But Hatzi’s life isn’t all glitz and courtside cheers. She’s carved her own path as an influencer and entrepreneur, running Casa Amor Interiors and a dress hire business, Style Studio, that lets everyday Australians borrow from her enviable wardrobe. “I spend a lot of time alone on tour,” she’s admitted, painting a picture of a routine that’s more regimented than it seems—breakfast with Kyrgios, his hour-and-a-half training sessions, then back to the player’s lounge before physio rounds. It’s a grind she balances with poise, her latest selfie a glimpse into the moments of beauty she carves out amid the chaos.
The tennis world, no stranger to power couples, has embraced Hatzi’s rise. Her style—classic yet bold, inspired by icons like Kendall Jenner—has made her a courtside fashion standout, whether she’s in Melbourne or Miami. Yet, she insists there’s more to her story. “Nick’s the star, and I just feel like a normal girl,” she’s said, a humility that endears her to fans even as her follower count soars. That normalcy clashed beautifully with the glamour of her Beverly Hills moment, a snapshot taken during a trip to California as Kyrgios gears up for Indian Wells—a tournament where he’s expected to return in early April.
As the comments poured in, from Kyrgios’s heart-eyed devotion to Badosa’s effusive praise, the selfie became more than a photo—it was a celebration of Hatzi’s evolution. From a Sydney psychology grad to a global influencer, she’s turned the spotlight her way, one mirror at a time. For Kyrgios, it’s another reason to smile as he navigates the twilight of his playing days. For Badosa and the tennis faithful, it’s a reminder that behind every ace and rally, there’s a story—and sometimes, it’s as captivating as the one Hatzi’s writing, frame by glamorous frame.
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