See Pregnant Jessica Simpson, Fiance Eric Johnson's Halloween Family Portrait

This family portrait will look pretty different next Halloween! 

Pregnant Jessica Simpson, fiance Eric Johnson and their Airedale terrier Bentley were all smiles in their Halloween family portrait on

Simpson, 31, stuck with her mummy costume, while Johnson, 32, opted for a Larry Bird Celtics jersey. (Earlier in the day Monday, Simpson wrote: "It's true! I'm going to be a mummy.") Although Bentley wasn't in a costume per se, the pup was adorned with several strands of what appeared to be pearls.

The Fashion Star mentor said she "adopted" Bentley after she and Johnson confirmed their engagement in Nov. 2010. Her beloved dog Daisy was taken by a coyote in Sept. 2009.

But Bentley won't be Simpson's baby-to-be's only playmate. The singer's younger sister Ashlee and her ex Pete Wentz are parents to 2-year-old Bronx.