Shirley Cowlings has very kindly given us this pattern, and also some useful advice "Be careful when you knit booties to keep them very small... Watch your pattern size, or they could end up starting ...
Up to 3(3–6:6–9:9–12) months. Using 3mm (US 2/3) needles and MC, cast on 37(41:45:49) sts. Work 2 rows in garter st. Row 3 K1, M1, K17(19:21:23), M1, K1, M1, K17(19:21:23), M1, K1. 41(45:49:53) sts ...