The basic pattern instructions are the same for both versions except for the borders, collar, and hood:
a) Little Purple Riding Coat
b) Little Purple Riding Hood

Stockinette Stitch Gauge on US 6 / 4.0mm needles

MATERIALS:
Sublime Baby Cashmere Merino Silk - DK
(50 grams each ball)

Little Purple Riding Coat:
Age 0-6 mo: 3 balls
Age 6-12 mo: 4 balls
Age 1-2 years: 5 balls
Age 2-3 years: 6 balls

Little Purple Riding Hood:
Age 0-6 mo: 4 balls
Age 6-12 mo: 5 balls
Age 1-2 years: 6 balls
Age 2-3 years: 7 balls

MEASUREMENTS:
Age 0-6 mo:
To Fit Chest: 41cm / 16”
Actual Size: 46cm / 18”
Full Length: 24cm / 9.5”
Sleeve Length: 15cm / 6”

Age 6-12 mo:
To Fit Chest: 46cm / 18”
Actual Size: 52cm / 20.5”
Full Length: 28cm / 11”
Sleeve Length: 17cm / 6.5”

Age 1-2 years:
To Fit Chest: 51cm / 20”
Actual Size: 56cm / 22”
Full Length: 32cm / 12.5”
Sleeve Length: 20cm / 8”

Age 2-3 years:
To Fit Chest: 56cm / 22”
Actual Size: 61cm / 24”
Full Length: 38cm / 15”
Sleeve Length: 24cm / 9.5”

(source for material and size information - Sublime 649 - English)