Part of their growth is to go from being a baby in diapers to being a bigger kid who wears big kid underwear. (yourvillageconsulting.com)
These diapers look more like big kid underwear and feel thin enough against their skin so that they will be encouraged by feeling like a big kid. (earlymomentsmatter.org)
The pressure to have my toddler in big kid underwear so early in the game was exhausting. (romper.com)