From the Pattern:

Materials: Small Preemie- Fingering weight yarn, size 3 needles. Large Preemie- Sport weight yarn, size 5 or 6 needles. Newborn- Worsted weight, size 8 needles.

Note: The easiest increase is knit in front and back of stitch. I worked my increases by making a backward e-loop one stitch before and after the marker. For a decorative increase on a little girl’s sweater, do a yarn over.