BSJ Hat:

I've been editing my BSJ pattern to create a spreasheet style pattern because I like to check off each row as I go.  I also want to make sure that the numbers are correct as written.   When I have the pattern perfect (or at least closer to perfect)  I will figure out how to upload a link for a  downloadable pdf, for others to enjoy.  In the meantime, here is a a pattern for a matching hat.

6 sts/inch makes a preemie bsj that is 11" around.
Changing the gauge to 4.5 sts/inch (4.5 mm needles, worsted weight wool) makes a 14"  preemie bsj, which is good for a 5-7 lb baby.  One ball of Red Heart will make the whole set.  I made the blue set out of a ball of ombre/paints (3 oz instead of 4 oz), and I had about 2 yards left. 

BSJ matching hat:
Hat is knit back and forth on two needles and then seamed.  Gauge should match sweater.

Cast on 64 stitches.  Knit 20 ridges (40 rows).
Decreases:
Row 1: (k6, k2tog) across row.
Row 2 and all wrong side rows: knit
row 3: (k5, k2tog) across row
row 5: (k4, k2tog) across row
row 7: (k3, k2tog) across row
row 9:  (k2, k2tog) across row
row 11:  (k1, k2 tog) across row
row 12: k2 tog across row.
row 13: k2tog across row.
Finish hat by sewing tail of last row through all stitches to gather.  Sew up side seam. 

BSJ matching booties:
gauge and needle to match sweater.
Booties are knit from the bottom to the ankle, in garter stitch. 
Make 2.
Cast on 35 stitches.  Knit 6 ridges (12 rows).
Toe decreases:
row 1: k15, k2tog, k1, k2tog, k15
row 2: k14, k2tog, k1, k2tog, k14
row 3: k13, k2tog, k1, k2tog, k13
continue in this manner until you are knitting k10, k2tog, k1, k2tog, k10 (23 stitches).
Next--eyelet row:  k2, (yo, k2tog) across row, end k1.
Knit 5 more rows.  Bind off wrong side, knitwise. 
Sew up back seam and bottom of bootie.

Ties (make 2):  Cable cast on 80-90 stitches.  Cast off.  This makes a tie that looks like an icord, but it is much faster.  You could use ribbon instead.  Thread through the eyelet row in the bootie, and tie in a bow.