Nick Kyrgios' girlfriend Costeen Hatzi lives the high life as she shows off her first class cabin

Nick Kyrgios and girlfriend Costeen Hatzi have fun dressing up as Joker and Harley Quinn

Nick Kyrgios' girlfriend Costeen Hatzi rushed to hospital in Mexico and 'goes straight to emergency'

Costeen Hatzi reveals where she was working before meeting boyfriend Nick Kyrgios