I haven't used any of these yet, but there's been several recs on here before, so I've got some sites bookmarked for when I need them.
(the first 3 are fellow nesties)
www.monkey-tree.com
www.kdloftisphotography.com
www.kmathis.smugmug.com
www.bfkphotography.com
Re: Maternity Pics
https://boards.thenest.com/boards/ShowPost.aspx?PostID=52698218&forumid=461