Ummmm, this is adorable. Look at the frilly collar on the back of the pattern! Kids get all the cool stuff. You've got an adorable, wearable jumper on the front and a pullover on the back, both with enough lace and texture to be interesting but not enough that it distracts from the gorgeous self patterning of the new King Cole Norse 4ply sock yarn!
You'll need 3mm and 3.25mm needles.