This was easy to crochet because the sweater is seamless, made in the round. I added a silky edge in dove grey. I then did a ribbing row, with a front and back post stitch which gave body to the edges of the sleeves, collar, button closure and bottom of the sweater and the bottom edge of the pant legs and stretch to the waistband.
The pattern I used for the pants has a guide to make them fit a newborn to a 36 month old.
The sweater was based on