The original "Knitty Gritty" pattern for these boots can be found on DIY network. I rewrote the pattern for a newborn baby as the original pattern only listed sizes from 3 months.
0-3 months (length of foot approx 3.5 inches/ 9cm)
Small amounts of main colour yarn, and contrast yarn.
DPNeedles 4mm and 5mm
21st x 28R = 10x10cm with needles 5mm
This boot is knit all in one piece, with a seam along the back of the leg and down the middle of the sole of the foot. The sole is knit in garter stich (knit every row), the rest of the boot is knit in Stockinette stich (knit RS, purl WS).
CO 22 stiches with needles 4mm and CC, knit one row
With right side facing, begin to work the sole as follows:
R1: k1, yo, k9, yo, k2, yo, k9, yo, k1
R2 and all subsequent WS rows: knit all stiches, but knit the yo’s twisted, i.e. into the back of the yarn over
R3: k2, yo, k9, yo, k2, yo, k2, yo, k9, yo, k2
R5: k3, yo, k9, yo, k7, yo, k9, yo, k3
R7: k4, yo, k9, yo, k5, yo, k4, yo, k9, yo, k4
R9: k5, yo, k9, yo, k6, yo, k6, yo, k9, yo, k5
After row 10, change to larger needle size and MC and continue in stockinette stitch for 8 rows
Shape the instep as follows:
R1: k26, ssk, turn work (ignore the remaining stiches on the needle for now)
R2: sl1, p7, p2tog, turn work (again ignore any remaining stiches)
R3: sl1, k7, ssk, turn
R4: sl1, p7, p2tog, turn
Repeat R3 and R4 4 more times.
R13: sl1, k7, ssk, knit to end of row, turn
R14: p19, p2tog, p to end of row
Now, with RS facing, knit 5cm of stockinette across all stiches.
Change to CC, knit 2 rows (garter stich), then BO knitwise.
Sew back seam using mattress stitch (www.knittinghelp.com shows you how)
With CC, make a fake sewing stich line down the ‘side seams’ and across the instep, to imitate Ugg boots (if required).