Sizes:
Small (UK 8/10)
Medium (UK 12/14)
Large (UK 14/16)
X Large (UK 16/18)

Hooks: 5mm & 4mm

Gauge: 10cm = 17sts x 8rows
(1st Row Dc, following rows Dc, Ch 1, Sk St(Ch Sp))

I WOULD STRONGLY RECOMMEND CHECKING THE GAUGE BEFORE STARTING. I TEND TO WORK TIGHTLY, SO PLEASE CHECK GAUGE TO AVOID HAVING TO START AGAIN

Yarn: Double Knit Weight Yarn – Cotton: Wendy Supreme Cotton Silk DK

Amounts for both Jumper & Skirt:
Small- 600g (1206m/1326yd) approx.
Med- 600-750g (1206-1508m/1326-1658yd) approx.
Large- 800g(1608m/1768yd) approx.
XLarge- 800-950g (1608-1910m/1768-2100yd) approx.

Key:
St Stitch
Ch Chain
Sp Space
Sc Single Crochet
Dc Double Crochet
Dc2tog Double Crochet Two Stitches Together
Sl Slip stitch
WS Wrong Side
RS Right Side
{{ }} Total stitches
 

All my patterns use US Terminology

Photos are for size small