From uni student to social media sensation! Nick Kyrgios' glamorous new girlfriend Costeen Hatzi gains more than 18,000 Instagram followers after going public with tennis star By Ali Daher For Daily Mail Australia Published: 00:33 GMT, 19 January 2022 | Updated: 00:35 GMT, 19 January 2022 Viewcomments Tennis bad boy Nick Kyrgios went public with his new girlfriend Costeen Hatzi last month. And just weeks later, the 21-year-old interior designer from Sydney appears to be leaning towards a career as a social media influencer. Since going public with her their romance, the glamorous brunette has gained a whopping 18,000 followers on Instagram, according to Social Blade. She's an influencer now! Nick Kyrgios' glamorous new girlfriend Costeen Hatzi, 21, (pictured) appears to have embarked on a career as a social media influencer after going public with her new romance Costeen has been using her platform to showcase her affluent new lifestyle, which includes private jets, luxury hotel stays and fancy restaurants. The couple went Instagram official last month, after former world No. 13 Nick shared a photo on his grid of the couple cuddled up together. He also posted more photos on his Stories of the pair looking loved-up while on their way to a luxurious hotel suite. Suddenly popular: Since going public with the Australian tennis pro last month, the glamorous brunette has gained a whopping 18,000 followers on Instagram, according to Social Blade Fancy! Costeen has been using her platform to showcase her affluent new lifestyle consisting of private jets, luxury stays and fancy restaurants 'This is to the New Year and a chance for all of us to get it right,' he added, hinting at his tumultuous split from ex Chiara Passari, which made headlines last year. Nick's break-up with Chiara came after a heated clash in hotel quarantine in Adelaide on October 7, which resulted in police being called to the scene. He had first been pictured with Costeen in December at a basketball game at Qudos Bank Arena in Sydney. Love: Nick went 'Instagram official' with Costeen last month, sharing a photo on his grid of the couple cuddled up together While it's unclear how they met, Costeen has graduated from university with a bachelor's degree in psychological science. Meanwhile, Costeen has spent the past few days playing cheerleader for her talented beau as she watches him play tennis from the grandstands. Nick dominated on the court, beating British qualifier Liam Broady in a straight-sets victory while keeping audiences entertained with his trademark on-court theatrics. Supportive: Costeen had spent the day playing cheerleader for her talented beau as she watched on from the grandstands Case of the ex: Nick had been dating Chiara Passari (left) on and off from July 2020 until a few months ago, and their explosive arguments ensured they were rarely out of the headlines Read more: Share or comment on this article: All rights reserved for this news site (dailymail) and under his responsibility