Mickey Mouse Clubhouse is my 3 year olds new favorite show and the inspiration for these crochet hats! I am sharing the pattern for newborn size, but will give you tips on how to make them in larger sizes.

Mickey and Minnie Mouse Crochet Hats
Size: Newborn
Materials:
– Medium worsted weight yarn in black, red and pink
– Size H (5.0) Crochet Hook
– Tapestry Needle
– Two 1″ white buttons for Mickey hat, 1/2″ or 1/4″ white buttons for Minnie hat and bow.
Hat Pattern:
Note: Always begin your round in same stitch as your joining chain
Magic Ring, chain 1
10 HDC in magic ring, join to first HDC, ch 1
Round 2: 2 HDC in each around (20 HDC), join, chain 1
Round 3: 2 HDC, HDC in next, repeat around (30 HDC), join, chain 1
Round 4: 2 HDC, HDC in next 2, repeat around (40 HDC), join, chain 1
Round 5-9: HDC in each around (40 HDC)
Round 10-14: HDC in each around with red yarn for Mickey or pink for Minnie (40 HDC), fasten off, weave in ends.
Sew on two white buttons for Mickey Hat and smaller 1/4-1/2 inch white buttons to create polkadots for Minnie hat. I used six 1/4″ buttons for Minnie’s bow and nine 1/2″ buttons for the bottom of the Minnie hat.
Ears (make 2):
Magic ring, chain 1
12 HDC in magic ring, pull tight, join to first HDC, chain 1
Round 2: 2 HDC in each stitch around (24 HDC), join, chain 1
Round 3: 2 SC, SC in next, repeat around (36 SC), fasten off but leave long tail for sewing onto hat
Sew ears between rows 3 and 6
*Make two ears and sew together for thicker, sturdier ears. I did this with the Mickey hat, but not for Minnie.

Minnie’s Bow:
Chain 16,
Row 1: HDC in second chain from hook, HDC in next 14, chain 1, turn
Row 2-5: HDC across (15 HDC)
At the end of row 5, do not turn, continue to SC around edges, join to first SC in row 5. Faston off, weave in ends.
– Scrunch the middle of the bow accordion style  and with a tapestry needle, sew yarn through the middle. – With long tail, wrap yarn the middle approx. 10-15 times. Tie off, but leave a tail for sewing onto hat.

I sewed the middle of the bow to the top center of the hat and also sewed the bow to the ears.

For bigger sizes:
Note: I have not tested the bigger patterns but it is what I use for basic increases. 
0-3 Months:
Follow instructions above till Round 4
Round 5: 2 HDC, HDC in next 7, repeat around (45 HDC)
Round 6-14: HDC in each around (45 HDC)
3-6 Months:
Follow instructions above till Round 4
Round 5: 2 HDC, HDC in next 3, repeat around (50 HDC)
Round 6-15: HDC in each around (50 HDC)
6-9 Months:
Follow instructions above till Round 4
Round 5: 2 HDC, HDC in next 3, repeat around (50 HDC)
Round 6: 2 HDC, HDC in next 9, repeat around (55 HDC)
Round 7-16: HDC in each around (55 HDC)
To increase ear size, continue with Round 3 of the ear pattern above until they look proportional to the hat.
To increase bow size, increase the number of starting chains until length desired and then continue with rows of HDC’s until it is as big as you would like it.