Actress Mila Kunis achieved her skinny figure in Black Swan by puffing on cigarettes and limiting herself to just 1,200 calories a day.
The Ted star appeared opposite Natalie Portman as rival ballerinas in the 2010 psychological thriller, and to make her portrayal more authentic, she decided to slim down and shed a few pounds.
However, instead of turning to a nutritionist for help to pare down her diet, she instead began lighting up more frequently to curb her appetite and survived on minimal calories.
"I never watched what I ate (before)," she told shock jock Howard Stern. "It was one of those things...
"And I'll tell you this - I'm not promoting this at all - but I used to be a smoker, and so I smoked a lot of cigarettes and I ate a limited amount of calories."
"Twelve-hundred calories and I smoked," she reiterated, admitting it wasn't the best weight-loss method. "I don't advocate this at all. It was awful."
Mila's efforts paid off - she won huge acclaim for her work on Black Swan, landing a nomination for Best Supporting Actress at the 2011 Golden Globes, while the film was shortlisted for Best Picture at the Oscars, and won Natalie Portman the Best Actress Academy Award.
Despite the industry recognition, the 32-year-old insists she isn't in Hollywood for the awards: "I love what I do but I don't need to win," she explained. "Like, I just need to work."
But Mila, who subsequently quit her nicotine addiction, admits she did enjoy the Oscars experience, especially since she was able to sneak in alcohol to sip on during the lengthy show.
"I think I, at the Oscars, had the best time of anybody, because I snuck liquor in, I did shots," she smiled. "I literally had the best time. I was like, 'This is crazy, you guys, is anyone else aware of how crazy this is?!'"