The 52-year-old star cut a trim shape as she enjoyed a dip in the sea on a holiday in Hawaii with her family.
Julianne showed off a slim shape in a black halter neck bikini top by Melissa Odabash and a pair of shorts.
She was seen splashing about in the sea with her husband Bart Freundlich and she certainly seemed to be having an entertaining time.
The Game Change star was seen screaming as a wave crashed around her and was later seen beaming in delight as she emerged from the refreshing experience.
As well as showing off a slim physique the actress appears to have very few wrinkles and she looks much younger than her years.
Bart couldn't keep his hands off his beautiful wife and the pair were seen sharing a cuddle, during their dip.Julianne wasn't the only one who was flaunting a youthful body, her husband Bart also looked in great shape.
The 42-year-old film director displayed sculpted biceps and defined abs during the dip in the sea.The couple were joined by their children, son Caleb, 13 and their 10-year-old daughter Liv.
The foursome proved to be a lively bunch and were seen running in and out of the water making the most of the holiday.Before Julianne ventured into the sea she arrived at the beach in a black T-shirt and a bright red cap in an attempt to cover up as much of her porcelain skin.
Perhaps avoiding the sun is her secret to maintaining a youthful appearance. The family have been taking part in a number of activities during their trip to Hawaii.
Julianne has been seen watching her son bodyboard and the actress also enjoyed a horse-riding session. The Emmy award-winning actress is no doubt making the most of her time with her family ahead of a busy 2013.
She has four films due for release this year and is starring in Don Jon's Addiction, Carrie, The Seventh Sin and Non-Stop.
