What is appropriate wedding attire for a junior bridesmaid (age 12)? Should she wear a dress that matches the older bridesmaids' or one that matches the flower girl's?
Junior bridesmaids generally dress in something similar to the bridesmaids rather than the flower girl. Since she's 12 (almost a teenager), she's not going to want to match some little kid! You don't have to put her in exactly the same dress as the other women -- depending on what they're wearing, it may not be age-appropriate -- but she should wear a dress in the same or a similar color and of the same length (i.e., if they're wearing floor-length gowns, she should, too).
Bridal Party Fashion
Basics for Bridesmaids