Costeen Hatzi is an influencer now.
The psychology student, 22, looked to be reveling in her newfound fame while spruiking the mermaid hair tool on Tuesday.
Costeen wore a white singlet as she sprayed heat treatment in her tresses before using the tool in her hair.
She’s an influencer now! Nick Kyrgios’ girlfriend Costeen Hatzi, 22, (pictured) reveled in her newfound fame as she spruiked a curling wand on Instagram on Tuesday
The beauty seamlessly used the tool before posing in the mirror.
‘The easiest way to achieve beach waves using Mermaid Hair, obsessing over this look,’ she wrote, before offering a discount code.
Costeen’s spirited post follows speculation she was engaged to Nick.
It’s official: ‘The easiest way to achieve beach waves using Mermaid Hair, obsessing over this look,’ she wrote, before offering a discount code
Nick posted a picture of the pair cuddling up in Miami, with Costeen wearing a ring on her left hand wedding finger.
However, Nick’s manager later denied the pair are engaged.
The world No. 13 went Instagram official with Costeen in December following his split with long-time girlfriend Chiara Passari.
Birthday girl: Costeen (pictured) shared a slew of glamorous Instagram photos as she celebrated her 22nd birthday on Tuesday
Costeen watched all of Nick’s games at during the Australian Open at Melbourne Park back in January and has been described as a key member of his team.
Nick said on the Today show recently that his girlfriend makes him ‘really happy’.
During his playful joint interview with Costeen on the Today show, he hinted to host Karl Stefanovic that marriage and babies are on the cards.
Speculation: Nick sparked rumours he was engaged to Costeen in March. The 26-year-old posted a picture of the pair cuddling up in Miami, with Costeen wearing a ring on her left hand