Last year, Jessica Colletti and Charlie Interrante were complete strangers. After meeting at a photoshoot for new mothers and hearing about Interrante’s trouble with breastfeeding her son Mateo, Colletti became sympathetic to the plight of a fellow mother. Colletti, a Pennsylvania mother whose son, Lucian, is only two months younger than Mateo, told Interrante that if she was up for it, she would be willing to take over her breastfeeding duties.

Nearly a year later, “milk brothers” Mateo, 18 months, and Lucian, 16 months, have become inseparable. Of course, it helps that Colletti and her husband Ben asked Interrante and Mateo to move in with them — a decision that raised more than a few eyebrows. A photo of Colletti breastfeeding both Mateo and Lucian that was posted to the Mama Bean Parenting blog received quite a bit of attention, and not all of it was positive.

"My son on the right is 16 months and my friend's son is 18 months," Colletti explained to Mama Bean. "I watch her son while she works and have been feeding them both for a year! So much love between these milk siblings, it's a special bond between us all."

In spite of Colletti and Interrante’s critics who, for whatever reason, have a gripe with the idea of a mother breastfeeding another mother’s child, both moms remain unapologetic. As Mama Bean points out, wet-nursing is considered one of the World Health Organization’s "best alternatives" to maternal breastfeeding in its "Global Strategy On Infant And Young Child Feeding." Would World Breastfeeding Week really be complete without this story?