Fact: My kids are super skinny.
At 3 years old, they are both under 30 lbs (M--26; B--23). Yep, SUPER skinny. I have a hard time finding pants that fit them in the waist, even pants that have all elastic or even partial elastic like the khakis below. I was forever rolling the waistband down to "help" the pants fit. Eh...yeah that doesn't really work. Benji would start running with one hand on his hiney to hike his pants up. Poor kid.
A top view
Both sides done.
I have done this little fix to about 6 pairs of the boys' pants and now they can wear them without the hiney-hike that we had goin' on before. This is so simple and it WORKS! Hope this helps other mamas out there with super skinny kiddos!