Nicole looked chic and glamorous in white lace dress and wore her hair in a pretty French braid.
She had a brief chat with Julie and greeted her with a kiss on the cheek.
Nicole looked happy and relaxed as she chatted away to Anna who was dressed in a floral frock.
Keith was also on fine form and looked over lovingly at his wife as they discussed the tennis.
Onlookers couldn't get over how lovey dovey the pair were. 'They couldn't keep their hands off each other,' one onlooker told New Idea.
Earlier on the trio were seen at the AO Inspirational Brunch where Anna was due to give a speech.
'I’m going to talk a little bit about leadership and my love of tennis obviously, and my gratitude for being here, and a little bit about how I feel about women in today’s world,' she told the Herald Sun.