or a girl with short hair - if that's what's needed!
Use 3.5mm needles and double knitting yarn in the colour of your choice. Abbreviations as per the Petite Purls pattern.
Cast on 50sts.
Rows 1-17: k
Row 18: (k3, k2tog) to end - 40 sts
Row 19: k
Row 20: (k2, k2tog) to end - 30 sts.
Row 21: k
Row 22: (k1, k2tog) to end - 20 sts.
Row 23: k
Row 24: (k2tog) to end -10 sts.
Break off a long length of yarn, thread through the remaining stitches, pull up tightly and fasten off. Seam the row edges.
Place the hair on the dolls head, pinning if desired to keep in place. Sew in position.