"A knitting pattern for a micro preemie burial gown using either 3ply, 4ply or dk yarn depending on which size you wish to knit. Sizes start from 7 inches in height through to 14 inches in height, or approximately 20 -26 week gestation." - DollieBabies - Knits For Newborns
 
Find the pattern here: https://www.craftsy.com/knitting/patterns/micro-preemie-burial-gown/468848