Nick Kyrgios's ex-girlfriend Costeen Hatzi unveils her incredible revenge body and shows off her new boob job as her career skyrockets following their split

Former tennis WAG Costeen Hatzi appears to have undergone a boob job as she continues to undergo a glamorous makeover following her split from Nick Kyrgios.

The brunette beauty showed off her new bust in a tight top as she promoted an activewear brand on Instagram on Tuesday.

She first sparked rumours she had the procedure at the premiere of The Devil Wears Prada 2 in Sydney back in April.

She revealed her eye-popping cleavage in a black and white strapless gown by Constantina Official on the red carpet.

It comes as Costeen's career as an influencer has taken off.

The stunning 25-year-old has been spruiking several brands on her Instagram page, including Tom Ford Beauty, Charlotte Tilbury, Fashion Nova, The Iconic and Chemist Warehouse.

Costeen appears to be happily single following her shock split from Kyrgios last year.

Meanwhile, the bad boy tennis star recently confirmed the identity of his new partner, revealing they have been together for several months.

Kyrgios revealed in April that he was in a new relationship with a mystery woman just weeks after being spotted with a glamorous brunette at the Australian Open.

The 31-year-old introduced his followers to his new flame in a post featuring a photo of them together accompanied by the caption 'life keeps surprising me'.

It's been revealed that the woman is Melbourne-based Danai Stamati.

Kyrgios confirmed the romance with a social media post.

He shared a post from Stamati on his Instagram story, featuring photos of the pair with the caption 'Appreciate you' and 'Happy birthday handsome boy. Proud of you every day'.

Kyrgios also uploaded a photo of them holding hands, saying he was 'grateful' for Stamati, who names Nafpaktos in Greece as her hometown on Facebook.

In another story on Instagram, Kyrgios replied to a fan who asked him how long he has been with Stamati.

'3 months,' he wrote back.

Danai lists her profession as a sales floor assistant for Metricon, and her social media reveals she will celebrate her 24th birthday this September.

Danai is already a hit with the Kyrgios family, with the couple sharing images of playing happily with Nick's niece and nephew Sofia and George, his brother Cristos's children.

Kyrgios has also introduced her to the parents already as well, with Danai following both his father George and mother Nill on social media.

She also bears more than a passing resemblance to Kyrgios's former flame Costeen.

Kyrgios and Costeen dated from late 2021 to March 2025, frequently sharing their life on social media.

Costeen confirmed the split in May 2025, saying they no longer spoke, but did not reveal the reason the relationship fell apart.