The happy family smiled for the cameras as they took to the media wall.
Wearing a navy tux for the evening, Lleyton stood with Bec who wore a pretty black and white frock with spaghetti string straps.
Their nine-year-old son followed in his parent’s glam attire with a white shirt and grey waistcoat and beamed for the cameras while Bec lovingly placed a hand on her son’s back.
Cruz was last pictured with his parents back in October when they attended the Australian Motor GP at Phillip Island.
Proud mother Bec uploaded the image to her Instagram account with the caption ‘Me and my boys.’
Bec recently opened up on when she first met Lleyton and began her whirlwind romance.
'I couldn't play tennis, so it was quite comical. I didn't impress him with my game, he just thought it was really admirable that I gave it a go,' she told Stellar.
After getting together, the couple quickly got engaged.
'It was such a whirlwind, which I think was part of the reason why we ended up with such a lot of attention - because it was after only six weeks that we got engaged,' she added.
'All the family were so happy and supportive. I guess they just saw the two of us together and saw we were happy,' Bec revealed.
The couple married in July 2005 at a lavish ceremony on the steps of Sydney’s Opera House.
Thirteen years later, the couple share three children Ava, 12 Mia, 7 and Cruz, 9.