You will need a size 4 mm crochet hook. Sirdar references this as a F/5 - which is 3.75 mm in the US. Please check to see which size works best for this design.

Design is written in UK crochet terms. If you usually use US crochet patterns, please take the time to learn the differences.

You will need 5 buttons. Sirdar used their button #B5611-0521

Finished measurements:
Bust circumference: 44.5(48, 52.75, 56.75, 60.25, 63.75)“ 113(122, 134, 144, 153, 162 cm)
Finished length: 21.75(22.5, 23.25, 24, 24.75, 25.5)” 55(57, 59, 61, 63, 65) cm
Sleeve to armhole: 17.75” (45 cm) for all sizes

Yarn used:
Sirdar Cotton DK - 100 g balls
Shade 514 Nautical - 8(8, 9, 10, 11, 12) balls