Mila Kunis admits she's a slob when it comes to her style.

The 'Black Swan' actress isn't a fan of getting dressed up and although she will make an effort when the occasion requires it, she is much more at home in casual and comfortable clothes.

She said: "My everyday style would be sneakers, jeans, a vest and a sweatshirt. I love sweatpants as well and have even been to dinner in sweatpants! I will try to put an effort into what I look like when need be but when it's not necessary, I look like a slob."

While she is laidback when it comes to her style, Mila is very dedicated to her profession and recently lost 20lbs for her role as a ballerina in 'Black Swan'.

However, she recently admitted it took her just "hours" to regain the weight as she went back to her old eating habits.

She said: "It took me five months to lose 20lbs, and it took me hours to gain it back. It was magical how quickly it all happened. Before production ended, the last time I had to do any sort of dancing, I ran home that night and had a massive bowl of mac and cheese. I was so excited.

"Going back to my poor eating habits, after having really good eating habits, my stomach was a little unsettled, but after production ended, the first thing I did was go and get Panda Express at the airport terminal and then, I landed in Los Angeles, got in my car, drove to In-N-Out and had a double-double, animal style with a root beer float, and it was fantastic. It was so good."