This hat fits my 9 month old nephew perfectly, but he has a larger than average head. You may need to adjust the size for whomever you are making the hat. Be sure to check the gauge.

The finished
hat has a circumference of 19” and is 5 ½” high.
The bow tie
measures about 4” long and 2” high before you tie the middle.
Needed Materials:
Crochet Hook
Size I (hat and bow tie)
Crochet Hook
Size K (bow tie)
Worsted
Weight Yarn Green – 159 g (hat & tie)
Worsted
Weight Yarn Black – 24 g (band)
Worsted
Weight Yarn Gold – 50 g (buckle)
Tapestry
Needle
Hat
Using
the I crochet hook and holding two strands of green together, make a magic
loop.
Round
1: 6 sc in the magic loop. (6)
Round
2: 2 sc in each stitch around. (12)
Round
3: (Sc in next sc, 2 sc in next sc) 6 times. (18)
Round
4: (Sc in next 2 sc, 2 sc in next sc) 6 times. (24)
Round
5: (Sc in next 3 sc, 2 sc in next sc) 6 times. (30)
Round
6: (Sc in next 4 sc, 2 sc in next sc) 6 times. (36)
Round
7: (Sc in next 5 sc, 2 sc in next sc) 6 times. (42)
Round
8: (Sc in next 6 sc, 2 sc in next sc) 6 times. (48)
Round
9: (Sc in next 7 sc, 2 sc in next sc) 6 times. (54)
Round
10: (Sc in next 8 sc, 2 sc in next sc) 6 times. (60)
Rounds
11-18: Sc in each stitch around. (60)
Round
19: (Sc in next 13 sc, sc 2tog) 4 times. (56)
Rounds
20-27: Sc in each stitch around. (56)
Round
28: (Sc in next 8 sc, 2 sc in next sc, sc in next 9 sc, 2 sc in next sc, sc in
next 8 sc, 2 sc in next sc) 2 times. (62)
Round
29: Sc in each sc around. (62)
Round
30: (Sc in next 9 sc, 2 sc in next sc, sc in next 10 sc, 2 sc in next sc, sc in
next 9 sc, 2 sc in next sc) 2 times. (68)
Round
31: Sc in each sc around. (68)
Round
32: (Dc in next 10 sc, 2 dc in next sc, dc in next 11 sc, 2 dc in next sc, dc
in next 10 sc, 2 dc in next sc) 2 times. (74)
Round
33: Sc in each dc around. (74)
Fasten
off.
Hat Band
Using
the I crochet hook and holding two strands of black together, ch 9.
Row
1: Sc in 2nd ch from hook and in each ch across, turn. (8)
Row
2: Ch 1, sc in in sc, turn. (8)
Continue
in this manner until the band is the desired length. Fasten off.
Buckle
Using
the I crochet hook and holding two strands of gold together, ch 20. Join with a
slip stitch to form a ring.
Ch
2, 2 hdc in the same stich as the join, *hdc in the next 4 ch, 3 hdc in the
next ch, hdc in the next 4 ch*, 3 hdc in the next ch, repeat from * to * once,
join with a slip stitch to the beginning, fasten off.
Hat Finishing
Sew
the buckle on to the band. Sew the band onto the hat. Weave in ends.
Bow Tie
Using
the K crochet hook and holding two strands of green together, ch 11.
Row
1: Sc in 2nd ch from hook and in each ch across, turn. (10)
Row
2-4: Ch 1, sc in in sc, turn. (10)
Row
5: Ch 1, 3 sc in the 1st sc, 1 sc in each sc across, 3 sc in the
corner sc, 4 sc across the side, 3 sc in the corner, sc in each st across the
beginning ch, 3 sc in the corner, 4 sc across the side. Fasten off.
Tie Finishing
Fold
the tie in half like a taco. Take a long strand of green yarn and tie a tight
knot around. Continue to wrap the yarn around the center of the tie until you
get your desired look.
Using
the I crochet hook and one strand of green, ch 100. Fasten off. Thread the
chain under the knot that you tied. You can the tie the bow tie on.
Dc = Double Crochet
Hdc = Half Double Crochet
Sc = Single Crochet
Sc2tog = Single Crochet Two Together
You can see more details and can download a pdf of the pattern or from the Ravelry pattern page. While you are over on Ravelry, be sure to check out some of my other projects on my project page!