Lace Baby Hoodie and Cardigan, sizes 0-3 months and 6-12 months (18” and 22” chest), knitted in either 4ply or double knit.

I have often heard people ask if they can use a different weight yarn to that recommended for a pattern and knit a bigger size, so i decided to try it. The outcome is this pattern - 2 sizes but 1 set of instructions.
The smaller hoodie is knitted in 4ply and the larger cardigan uses double knit.