Before, 1 pair of mens shorts:
First I took apart the shorts by cutting the seams & unpicking the pockets on the back. I used a pattern from danamadeit.com, the shorts were just the right size for small pants:
I cut the shorts a bit smaller than the pattern as the pattern was for a size 2-3, but when I sewed it together they were too small! So I unpicked the outside leg seams & added a strip about 2" wide then resewed the legs back together, after seams there is just over an inch of extra fabric in the legs :) a good fix, looks OK & fits well :) maybe a bit too baggy in the legs, but a good fit over a cloth nappy bum!
After:
Plenty of room in the length for growing!