#Dragonlet is 17mos, and we finally retired the last of his 9mo pants, though some of the longer 12mo pants brush the floor (or fall off his hips). 12mo onesies fit fine.
Little guy, short legs, no hips, giant head.
I know we don't share genetics, but it's still strange for me, as elder son is 6'3" (slightly taller than I) and broad-shouldered.