Errata:

On the “Front” instructions, under “Begin waist
shaping,” the third step should be:

K29 (32, 36, 38, 42, 46), BO 21(21, 25, 25, 29, 35), K29 (32, 36, 38, 42, 46).
Work both sides of neckline at once.

There’s been some confusion about how to work the neckline shaping, so here’s how you do it for a size small, as an example:

-K38, BO 21, K 38. (76 sts)
-P38, BO 2, P36.
-K36, BO 2, P36.
-P36, BO 2, P34.
-K34, BO 2, P34.
… continue in that manner until you have 28 sts on each side.
-* P one row even.
-K to last 3 sts before neckline, k2tog, k1, switch yarn, k1, skp, k across.
Repeat from * 10 more times