These days bridesmaids prefer to team their lehenga/skirts with a classy crop top! Keep either one of the blouse or lehenga simple. If the ehenga takes the cake with embroidery work, make sure the blouse is simpler. The modern lehenga is ideal for a spring wedding, chose a fabric like georgette or crepe or other summer skewed fabrics for the lehenga to stand out. This could be your combination of traditional and modern mix for the bridesmaids.