British sisters-in-law Holly and Becky Stevens don’t just babysit each other’s children — they breastfeed them, too.

From best friends to breast friends, the moms revealed during an appearance on the U.K. show This Morning that they have been nursing one another’s babies for seven years, a practice that started almost accidentally when Holly’s son Freddy was just five days old.

What started simply out of convenience one day, while Becky was watching Freddy, who needed an emergency snack, became an unexpectedly practical parenting arrangement.

“It felt like a natural thing to do, and it didn’t feel odd,” Becky said, who at the time was still…

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