Jessica Simpson and Eric Johnson got engaged in 2010

Jessica Simpson's baby bump was on full disply when she served as a bridesmaid in her friend Kathryn Syoka’s wedding to Chris Hetherington in San Diego last weekend.

Simpson was dressed in a form-fitting black dress with ruching and full-length sleeves. She paired her bridesmaids gown with a metallic wristlet and wore her long blond hair down and parted down the middle. Also in attendance at the summer wedding was Simpson’s fiancé Eric Johnson, sister Ashley, CaCee Bobb and Odette Annable.

The pregnant Fashion Star mentor is already a mother to 13-month-old Maxwell, her first child with Johnson. The pair has been engaged since 2010. "We've had two different wedding dates, but he keeps knocking me up," she joked to Jay Leno earlier in her current pregnancy. Simpson, who is eager to marry her longtime boyfriend Johnson added, “I’ll just keep my legs crossed this time.”

Back in March, Simpson revealed that she and Johnson are expecting to add a son to their family, but has kept quiet about the expected due date.

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