Here is the pattern for the baby booties I posted a pic of on the recently finished projects thread:
I used size 3 needles and yarn with a gauge of 28st and 36rows = 4". Using larger needles and yarn appropriate for the needles would just produce a larger bootie. Using size 3 and the yarn I used produced a bootie that is definitely in the 0-3 month range - they measure an approximate foot length of 3.5".
Cast on 40 stitches
Row 1: Knit
Row 2: Purl
Row 3: Knit
Repeat these 3 rows 5 times more for a total of 18 rows.
Row 19: Knit
Row 20: K1, YO, K2tog repeat to last stitch, K1 (this produces holes for threading a ribbon through for a tie - if no ribbon desired, just purl this whole row)
Row 21: Knit
Row 22: K25, put rest on stitch holder
Row 23: P10, put rest on stitch holder
Row 24: Knit
Row 25: Purl
Row 26: Knit
Repeat these 3 rows 4 times more
Row 38: RS - K10, pick up 10 stitches along edge, put stitches on holder back onto needle and knit to end of row
Row 39: Purl across, pick up 10 stitches on other edge (I found this a bit tricky, I tried to pick them up purlwise ie. with the yarn still in FRONT of work so that the messy edges stayed on the inside of the bootie) put stitches on holder back on needle and purl to end of row
You will now have a total of 60 stitches on the needle.
Row 40: Knit
Row 41: Purl
Row 42: Knit
Repeat these 3 rows 3 times more
Row 51: Knit
Row 52: Purl
Row 53: Bind off 25 stitches, knit across rest of row
Row 54: Bind of 25 stitches, knit across rest of row - 10 stitches remain
Knit 33 rows, then K2tog on each end of each row until 4 stitches remain. Bind of rest of stitches.
Stitch ankle together first, then stitch sole.