The 29-year-old's pregnancy rumor was sparked when she hung out with Kutcher on October 27 and was pictured having a rounded stomach while she wore a striped tank top paired with jeans, reported Ace Showbiz.
Before the "Ted" actress was alleged having a baby bump, she had spoken about her desire to be a mother.
"I do want a family. I'd rather be in love and have a baby than a movie," she had said.
They couple have never confirmed that they are dating, but were spotted together on several occasions. Recently, they were spotted kissing at a wrap party for Kutcher's film, "Jobs", and going to Bali for a romantic getaway.