Thank you all
The bonnet pattern is here.
Since I don't have babies, I really had no idea where the size was. My neighbor said this looked to be about a 3 mth size. But the pattern says:
: To fit 8-10 lb. newborn [finished chest size 20 1/4" (51.4 cm), finished length 11 1/4" (28.5 cm)
The chest measurement on mine is 20". HTH.