Jessica Simpson  was all smiles as she stepped out to pick up groceries at a Bristol Farms in LA on Christmas Eve. The pregnant star spent the holiday home in California with her family, including fiancé Eric Johnson. Jessica and Eric divided up the time with their families this season, which meant Thanksgiving in Boston with his. Even for the casual trip to the store, Jessica was sporting high heels, which she says she'll be rocking right up until the delivery room. Jessica did go casual in Uggs and sweats , however, to take care of last-minute shopping with her nephew Bronx on Friday.