Size
To fit a 30(32, 34, 36, 38, 40) {42, 44, 46, 48, 50} (52, 54, 56, 58, 60, 62) in / 76(81.5, 86.5, 91.5, 96.5, 101.5) {106.5, 112, 117, 122, 127} (132, 137, 142, 147.5, 152.5, 157.5) cm bust. There is 3-4 in / 7.5-10 cm of positive ease built into the pattern and an approximate 4 in / 10 cm gap between cardigan fronts. Choose the size that is closest to your bust measurement.

Yarn
5(5, 5, 6, 6, 7) {7 , 7, 7, 8, 8} (8, 9, 9, 9, 10, 10) skeins of Toil & Trouble Yarns Classic Sock in Season of the Witch (75% superwash merino / 25% nylon / 100 g / fingering / 463 yds / 423 m) or 1908(2070, 2218, 2385, 2700, 2866) {2899, 3066, 3130, 3297, 3445} (3612, 3774, 4075, 4089, 4255, 4422) yds / 1745(1893, 2029, 2181, 2469, 2621) {2651, 2804, 2863, 3015, 3151} (3303, 3451, 3727, 3739, 3891, 4044) m of fingering weight yarn.

Please note that the fingering yarn is held double. Please see the below yarn requirements for worsted or dk weight yarn.

You may also use approximately 954(1035, 1109, 1193, 1350, 1433) {1450, 1533, 1565, 1649, 1723} (1806, 1887, 2038, 2045, 2128, 2211) yd / 873(947, 1015, 1091, 1235, 1311) {1326, 1402, 1432, 1508, 1576} (1652, 1726, 1864, 1870, 1946, 2022) m of worsted or dk weight yarn.

Needles
US 6 / 4 mm or gauge-size needles for knitting flat & small circumferences.
US 5 / 3.75 mm or smaller than gauge-size 40 in / 100 cm circular needles for knitting flat & small circumferences.

Gauge
22 sts / 34 rows = a 4x4 in / 10x10 cm swatch in stockinette, blocked.