Authored by Anne Gordon, Heather Hartline-Grafton, and Renee Nogales. Women, Infants, and Children (WIC) provides supplemental food, nutrition education, and health and social service referrals to low-income pregnant, breastfeeding, and postpartum women, as well as to infants and children younger than five. This study describes a range of innovative practices at 20 State or local WIC agencies focusing on breastfeeding promotion and support, nutrition and health education, and service delivery. For each program, the report provides background information and discusses the source of the innovation, key challenges, implementation lessons learned, evidence of success, and the feasibility of replication.