And it seems that healthy eating plays a big part in what keeps the actress looking so great.
The 29-year-old enjoyed a sushi meal on Tuesday as she joined some friends for lunch at Kiwami restaurant in Studio City.
Feeling fishy: Mila Kunis spent a sunny Tuesday having lunch with some friends at a sushi restaurant
She wore a navy T-shirt under a leather jacket and ripped jeans, completing her outfit with khaki canvas shoes.
Mila accessorised with just a pair of aviator sunglasses and a miniature quilted clutch.
A healthy meal: The actress dined at Kiwami in Studio City and kept a low profile as she left the eatery
Mila has been busy of late and has completed work on upcoming projects Blood Ties, The Angriest Man in Brooklyn, Hell & Back and Oz the Great and Powerful.
She is currently filming romantic drama The Third Person with an all-star cast including Liam Neeson, James Franco and Adrien Brody.
Dressed down: The 29-year-old wore a leather jacket over a navy T-shirt and ripped skinny jeans
Staying in shape: It seems the star sticks to a healthy diet where possible to maintain her gorgeous figure
Mila told The Sun: 'There are times when you just want to do something fun and different, because you’re going to have a good time doing it.'
Meanwhile Two and a Half Men star Ashton's new film jOBS is a biopic of Apple pioneer Steve Jobs.
It is due to be screened on the final day of the Sundance Film Festival in Park City, Utah, with the couple are expected to fly out to the snowy location later this week.
Cute couple: On Saturday Mila and boyfriend Ashton Kutcher took an amorous stroll together