Grab a couple of leftover long sleeves from your stash (your baby’s hip to ankle in length) & a piece of jersey (or t-shirt sleeve) large enough to fit your around little one’s waist.
Chop off the corner(s) on 1 side. This will eventually be the front/back area of the pants. I just eyeballed the amount I cut but if your unsure use a pair of well fitting inside-out-folded-in-half baby pants as a guide.
Add your waistband and your done! *the easy how-to is here