The "Black Swan" starlet has been dating her former "That '70s Show" co-star Ashton Kutcher since April.
The Huffington Post said she recently sparked baby buzz when she was photographed in Los Angeles wearing a loose-fitting tank top.
But Kunis' publicist is shooting down the speculation.
"She is not pregnant," Kunis' representative told RumorFix, separately clarifying to the MailOnline, "She is not expecting."
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