Measurements:
Actual chest size 81 (91, 101) cm/32 (36, 40) in
Length to back neck 48 (50, 52) cm/19 (19 1/2, 20 1/2) in
Underarm sleeve 44 cm/17 in all sizes

The pattern states only one yardage for all three sizes and includes the twinset’s sweater.