Pakistan has one of the highest rates of child marriage in the world, and conventional advocacy — statistics campaigns, public awareness ads, NGO reports — had circulated for years without moving the specific lawmakers who could actually raise the legal minimum age. General public sentiment was not the bottleneck; a small number of individual legislators were.

Wedding invitations in Pakistan are hand-delivered and carry real social weight — recipients are expected to respond personally, not file them away. UN Women and Impact BBDO had almost no media budget, but they had access to children's drawings and a postal address for every relevant lawmaker's office.

Instead of a public statistics campaign, UN Women and Impact BBDO mailed personalized wedding invitation cards — illustrated by children aged 5 to 15 — directly to Pakistani lawmakers, each inviting them by name to a specific child's wedding. A legislator couldn't deflect an invitation to the public; they had to personally respond to it.

Mailed each lawmaker a personalized, child-drawn wedding invitation naming them as a guest, forcing a personal response that a public report could be deflected.

A personalized invitation demands a personal response, unlike a general report.

The cultural weight of wedding invitations in Pakistan made lawmakers engage.

Targeting the specific decision-makers concentrated limited resources where change happens.

When a few people hold the power to change a rule, reach each one personally with something they can't ignore.

Lawmakers who received the cards held them up at Pakistan's National Assembly. On March 7, 2023 — about 14 months after the campaign reportedly launched — the Federal Shariat Court ruled 18 as the minimum legal marriage age; press coverage credits the campaign as a contributing factor, though none of the sources read for this case establish direct causation between the mailing and the court's decision.

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The sources

  1. afaqs! — Wedding cards drawn by children; Impact BBDO's entry for UN Women wins a Health Grand Prix for Good afaqs! · afaqs.com
  2. UN Women's child wedding cards wins Cannes Health Grand Prix for Good Ad Age · adage.com