Each source suggests different yarn. The following yarn listing is taken from the Wool O’the West version.

Measurements
To fit chest/bust sizes
60/65, 70/75, 80/85, 90/95, 100/105, 110/115 cm
(24/26, 28/30, 32/34, 36/38, 40/42, 44/46 in)
Finished measurement
77, 89, 107, 119, 127, 139 cm
(31, 35½, 43, 47½, 51, 55½ in)
Length to shoulder
48, 60, 72, 72, 74, 74 cm
(19, 23½, 28½, 28½, 29, 29 in)
Sleeve length
30, 36, 43, 45, 47, 47 cm
(12, 14, 17, 17½, 18½, 18½ in)

Materials
Wool O’the West English Maid Aran Knitting
2, 2, 2, 2, 3, 3 X 400g balls
Wool O’the West Valueball Aran
2, 2, 2, 3, 3, 3 X 400g balls
Cable Needle