First swatch on US 10.5 using plotulopi & merino lace held together = 14 sts x 21 rows in 4”, looser than pattern gauge in terms of sts but denser in terms of rows.

Calculated that with my st gauge, knitting a Size 3 should result in a 42” finished bust.

Knit hem as written for Size 3; did only one decrease for body shaping (to 144 sts). Will follow Size 4 instructions for rest of pattern to make sure sweater isn’t too tight at the bust.