Naomi Watts posed in a sexy black and white dress at an event for Jacob's Creek Wine in Sydney's Centennial Park today. She's an ambassador for the brand and spent the evening mingling with friends, sipping wine, and listening to live jazz to launch their latest Cool Harvest blend. Naomi's whole family made the trip to Australia last week and they've been enjoying the Summer season Down Under ever since. Naomi, Liev Schreiber, Sasha, and Samuel went for a walk and spent time on Bronte beach, where Naomi wore a retro bikini to splash in the water. The vacation comes at the beginning of a busy year for Liev and Naomi, which includes the April release of a project they both have roles in called Movie 43.