Nicole and Lucia were all smiles as they posed for photographs.
Nicole even marked the special family occasion, taking to Instagram and sharing a sweet snap of herself hugging Lucia.
The actress wrote in the caption, "Going to the #ARIAs with my niece, we're so excited to see Keith hosting!"
Earlier this year, Lucia opened up about the death of her father Angus Hawley in 2015.
"The loss was excruciating. At 16 years old, processing this was tough," she said as reported by The Daily Telegraph, at the renaming of the UTS mental health unit - now called the Kidman Centre after her late grandfather Antony Kidman.
Watch the below for an ARIA's 2018 wrap-up: