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Pregnant Jessica Simpson said she will not marry her fiance, Eric Johnson, until after the birth of her child as she does not want to become "a hormonal Bridezilla."

The singer-turned-fashion designer told "Entertainment Tonight" that she has no plans to get married before her baby is born.

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"We didn't even have a [wedding] date nailed down," she said. "I'm going to wait until everything is over so I don't end up being a hormonal Bridezilla."

Simpson confirmed she was pregnant in October, ending weeks of speculation over her growing baby bump.

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"It's true! I am going to be a mummy!" she tweeted to fans, posting a photo of herself dressed in a white mummy Halloween costume with her hands framing her stomach.

When asked what finally caused her to announce her pregnancy, she told the TV show, "The stomach spoke for itself."

Simpson, 31, announced her engagement to former NFL player Johnson last November. She was previously married to 98 Degrees singer Nick Lachey.