Written in English US terms with abbreviations for UK.

hdc=half double crochet (half treble crochet UK)

sc=single crochet (double crochet UK)

dc=double crochet (treble crochet UK)

slst=slip stitch

fphdc=front post half double crochet (front post half treble UK)

bphdc=back post half double crochet (back post half treble UK)

dec=hdc invisible decrease (half treble invisible decrease) (see below)

ch=chain

mc=magic circle

Tog=together

Gauge square

Using a 3.5mm hook

Row1 Ch9, hdc in 3rd ch from hook, hdc next 6. (7)

Row2-4 ch1 hdc in base of ch1, hdc all. (7)

The square should measure 4cm x 4cm.

Materials 

4mm hook

100g Dk yarn 

5 matching buttons

Darning needle

Preemie 

Hat 

Hat to fit 11-12” diameter head and should measure between 10-11” and 4.5”tall when finished

Round 1: ch4, slst to first to form a ring, ch2 and 9 hdc into ring, slst to top of ch4. (10)

Round 2: ch2, hdc in same as ch2, 2 hdc in all, slst to top of ch2. (20)

Round 3: ch2, hdc in same, hdc 1, *inc, hdc 1* repeat to end, slst to top of ch2. (30)

Round 4: ch2, hdc in same, hdc 2, *inc, hdc 2* repeat to end slst to top of ch2. (40)

Round 5: ch2, hdc in same, hdc 3, *inc, hdc 3* repeat three more times, hdc to end, slst to top of ch2. (45) 

Round 6: ch2, hdc all, slst to ch2. (45) 

Repeat round 6 until the hat measures 3.5 inches tall.

Brim

Round 1-3: ch1, *fphdc, bphdc* repeat to end slst to first. (45)

Fasten off and sew in the ends and make a pompom if you want to add one.

Booties

Booties should have 7cm sole

Sole 

Round 1: ch11, 2 hdc in third chain from hook, 1 hdc in next seven, 6 hdc in last chain then working along other side, 1 hdc in each of the next seven, 3 hdc in the last, slst to first. (26)

Round 2: ch2, 1 hdc in the same stitch as ch2, 2 hdc in next, 1 hdc in each of the next eight, 2 hdc in next each of the next six, 1 hdc in each of the next nine, 2 hdc in each of the next two, slst to first. (36) 

Sole should measure 7cm long.

Instep

Round 3: (in blo) ch1, hdc in base of ch1, hdc to end, slst to first. (36) 

Round 4: ch1, hdc in base of ch1, hdc 9, *hdc dec* x 8, hdc 10, slst to first. (28) 

Round 5: ch1, hdc in base of ch1, hdc 5, *hdc dec* x 8, hdc 6, slst to first. (20) Turn

Ankle
Round 6-8: ch1, *fphdc, bphdc* repeat to end slst to first. (20)

Fasten off.

Mittens

Mittens should be 5cm wide x 8cm long

Round 1: ch3, hdc 7 in the last chain from hook, slst to first. (8)

Round 2: ch1, 2 hdc in all, slst to first. (16)

Round 3-5: ch1, hdc all, slst to first. (16)

Round 6-7: ch1, *fphdc, bphdc* repeat to end slst to first. (16)

Fasten off.