diaper issue

Tina • Expecting our 2nd bundle of joy.
I've used the honest diapers since lo was born and now that she's getting bigger the poops can be a little messier. I'm still EF and it seems every time she poops it ends up creeping out the back of the diaper and leads to a outfit change. 
Is this the norm with breastfed baby poop or is it time for me to switch to a new diaper? Open to all suggestions! 😀💩