Jessica Simpson Jessica Simpson

Jessica Simpson Bump Watch 2011 finally came to an end Monday when the singer and fashion designer confirmed she is expecting.

"It's true — I'm going to be a mummy!" Simpson, 31, wrote on her website along with a picture of herself dressed in a mummy (get it?) costume for Halloween.

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Speculation has been rampant for weeks about Simpson's impending motherhood after she was photographed with a growing belly several times. This will be the first child for Simpson and her fiancé, Eric Johnson. The two started dating in May 2010 and became engaged in November of that year.

Simpson will next appear on the upcoming NBC reality series, Fashion Star.

Simpson was previously married to Nick Lachey for three years before the Newlyweds stars split in 2005. Lachey started dating Kim Kardashian, who is newly single, shortly after his divorce from Simpson.