Years ago, moms everywhere entrusted their kids' childhoods with the likes of Hilary Duff and Ashley Tisdale when they were both Disney Channel stars. But now, both women are moms themselves - and the dynamics between other parents can be a lot trickier than anything we saw in Lizzie McGuire or High School Musical.

Ever since Ashley Tisdale published her personal essay about “toxic” mom on The Cut, she has been at the centre of the news.

But on Tuesday, Duff's husband, the musician Matthew Koma, couldn't help but say his piece.