Kids are messy, so shelling out for ... Allow for seam allowance when cutting down the side of the sleeve, which will be the inseam of the pants. Cut out the other leg on the other sleeve.

I was so pleased with my hack that I moved on to my daughter's outgrown-pants stash. Leggings became bike shorts she could wear under dresses, and jeans easily turned into cut-offs that she adored.