24-year-old Aussie model, influencer and businesswoman Costeen Hatzi has been credited as a calming influence on her pro-athlete partner Nick Kyrgios. She has been hard at work in between Kyrgios much-publicised return to the Australian Open.
For more, Costeen Hatzi joins.

The hidden cost of classroom technology
05:12

Inside the $65,000 Oscars gift bags
05:29

Australian travels the world reviewing roller coasters
05:07