Here is a great Ghillie Suit set for kids made by Swiss Link.  The construction is the same as their very popular adult ghillie suit.

It is a 4 piece set, Jacket, Pant, Rifle Rag and Sniper Veil. The pants have a waist that cinches up to fit the smallest waist or can fit up to a 42" waist. The total length of the pants is 38" and the inseam is 24". The jacket has a 24" torso length and measures 46" across to fit over clothing. The neck opening is 8".  This suit is easily shortened to fit smaller sized kids.

Available in Woodland and Desert patterns.

This is essentially an adult extra small and will fit kids from 10-14 years old.  Can be easy modified to be smaller.

Fits kids up from 4' 8" to 5' 5".  For taller kids, please choose the Swiss Link adult M/L size 4pc ghillie suit.