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Jessica Simpson accidentally reveals baby's gender on 'Jimmy Kimmel Live'

Singer and fashion mogul Jessica Simpson slipped and

Singer and fashion mogul Jessica Simpson slipped and blurted out the sex of her second baby while on the "Jimmy Kimmel Live" show. (Oct. 25, 2010) Credit: AP

Jessica Simpson is known for speaking before thinking -- as "Newlyweds" fans are well aware -- and her most recent slip of the tongue revealed a pretty big secret: her unborn baby's gender.

"The crazy thing is I never knew a wiener could actually make me nauseous," the "Fashion Star" judge joked Wednesday on "Jimmy Kimmel Live." Simpson, 32, was telling Kimmel her second pregnancy is much different from her first with daughter Maxwell Drew Johnson, now 10 months old.

The star may have also confirmed rumors the baby boy will be named Ace.

"Well, let's hope it's a boy," Simpson replied when Kimmel raised the subject.

Leave it to her to take the heat off Kate Middleton, just one day after the duchess may have accidentally revealed her baby's sex.

Watch the big reveal (and Simpson's shock): 

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