Well I classify this look as 'workout' or 'gym' gear. Maybe Jessica Simpson has been to the gym and then gone shopping for baby gear? Whatever the reasons behind the look don't matter. I think she looks so good in these photographs.
I wish that I could get a message to her to wear her hair like this all of the time! Stay away from the poofy big styled hair and go for this more natural look. It is so much more flattering and she looks so much younger!
In terms of her outfit - what a cute gym outfit. A pink / peach shirt, black leggings, black sneakers and a black sports jacket. It's nice to see Jessica in a top that doesn't over expose her bust and I love the way her bump looks on the side on view.