I'm planning on buying two kits and upsizing the pattern for my twins. They're 2 years old, but on the small size so 18-24 months would fit them but I want the sweaters to last for a year. I'm an advanced knitter and am pretty confident I can do the math to make the sweaters bigger.
However, I don't really have any idea of how much extra yarn I would need. I read that there is not much leeway in the kits with the yarn in the largest size. Has anyone tried making these bigger? I'm thinking I probably just need a ball or two in the main color as I would keep the strip sequences the same.
Or should I just get two kits for each kid and plan on having leftovers?