Show and Tell: Featherweight Cardigan
It is by knittingfan (Rav link) using Wollmeise Sockenwolle 100% superwash in colorway Versuchskaninchen. I love how she knit the collar in seed stitch! A lot of work, but with beautiful results.
She comments: "Feels lightweight and fits me quite well resulting from a combination of a simple and well designed pattern paired with a beautiful yarn."