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Jessica Simpson’s friends are reportedly speculating that the newly-single star is pregnant.

A source claiming to be a close friend told the National Enquirer: “[Jessica’s] friends are astounded at how huge breasts have gotten, and are asking each other if she could be pregnant.”

While Jessica is always been known for her sizeable boobs, the friend insists they’ve grown further: “Her breasts are positively huge, and she really seems to be taking care of herself.”

“She’s not saying anything one way or the other when the subject comes up, but women who put on weight don’t smile when someone suggests they might be pregnant.”

Jessica dated John Mayer for around six months before reportedly splitting up last week. Her publicist has denied the pregnancy rumours.