David's Bridal just rolled out four online-exclusive styles from the White by Vera Wang line, two wedding dresses, and two bridesmaid dresses. Both wedding dresses fall under the $800 mark, and the bridesmaid dresses are less than $180. And I think the first bridesmaid dress would TOTALLY work for a bridesmaid with a tiny baby bump. (If it's a friend's first baby, she could probably safely wear it until around the five-month mark!)
Wedding Dress 1
Style VW351190 Chiffon One-Shoulder Gown With Draped Tiers, $728.
Wedding Dress 2
Style VW351191 Bobbin Net Halter Gown With Pleated Circle Skirt, $728.