Popsugar Family Little Kids Milestones New Parents Should Celebrate 23 Small Parenting Milestones That Are Kind of a Big Deal July 22, 2017 by Denise Stirk View On One Page Photo 20 of 23 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 20 First time you leave the house with your child wearing underwear. Source: Flickr user Brandon Bohling Previous Next Start Slideshow Little KidsParenting HumorParentingNewborn