You will also need both a size US 6 (4.0 mm) circular needle no longer than 48” (100 cm) and a circular in size US 3 (3.25 mm) in the same length, plus stitch holders.

You will also need 5(5, 5, 6, 6, 6) buttons. Sirdar used their button # B5611-0785.

Finished measurements:
Bust circumference: 39.75(43.75, 46.5, 5.75, 54.75, 59)“ 101(111, 1118, 129, 139, 150) cm
Finished length: 23.75(24.5, 25.25, 26, 26.75, 27.5)” 60(62, 64, 66, 68, 70) cm
Sleeve to armhole: 18(18, 18.5, 19, 19, 19)“ 46(46, 47, 48, 48, 48) cm

Yarn used:
Sirdar Cashmere Merino Silk DK
Shade 403 China Blue - 13(14, 16, 17, 19, 21) balls