As my gauge is 22sts/4” the chest size will be bigger than in pattern, I.e. to fit 17.5”.

Hemline worked with 3.25mm needles.
3 sets of short rows worked in button bands.
Shoulders joined with kitchener stitch.
1st buttonhole on last row of lace pattern. 5 garter ridges between buttonholes.
15 purl ridges to neck shaping.
27 purl ridges from last lace pattern row to shoulders.

Sleeves worked in the round to last 6 rows. 4 lace pattern repeats.

Buttons placed on ‘boys’ side.