To get gauge, try T7.

Measurements
To fit bust sizes
80, 85, 90, 95, 100, 105 cm
(32, 34, 36, 38, 40, 42 in)
Finished measurement
85, 90, 95, 100, 105, 110 cm
(34, 36, 38, 40, 42, 44 in)
Length to shoulder
60, 61, 62, 63, 63, 64 cm
(23½, 24, 24½, 24¾, 24¾, 25¼ in)
Sleeve seam 45 cm (17¾ in)

Materials
Any good quality 3 ply yarn
Main Colour: About 260, 280, 300, 320, 340, 360 grams
Contrast Colour: 20, 20, 20, 20, 20, 40 grams
4 buttons.