This is a light lace sweater from sock yarn. You can use any sock yarn with the same yardage/metrage and fiber composition. Alternatively, you can try this pattern in some summer yarn that gives the same gauge. It is a seamless topdown knit. Try on as you go!
Sizing:
S (chest circumference 84 cm), M (90), L-XL (100-110).
I recommend using several pairs of circular needles in oder be able to try on. For the sleeves, you may use DPNs or short circular needles, whatever you like.