Resizing a pattern

I hope you can help. My mom wants to make this top: (Katia Serpentina Summer Top) but would need to enlarge the pattern. Does anyone know how this could be done and still keep the diagonal stripe in place? Is there a good resource somewhere about enlarging a pattern? I haven’t been able to find anything.


HERE is an article at about sizing. You could also knit the largest size of the pattern with a different gauge…like if it calls for 8spi do 6 spi instead. I think that would depend on how much larger you need it to be.