Nick Kyrgios' brother is married! Tennis star is a groomsman at Christos' wedding to Alicia Gowans

Costeen Hatzi looks like a long-lost Kardashian sister on a date night with boyfriend Nick Kyrgios

Nick Kyrgios' girlfriend Costeen Hatzi signs deal with PrettyLittleThing

Nick Kyrgios says he 'looks like a gronk' when his girlfriend makes him take photos of her in public