You will need sizes US 8 (5.0 mm) and 9 (5.5 mm) circular needles, both no more than 24” (60 cm) long.
You will also need a size US 9 (5.5 mm) circular needle at least 48” (120 cm) long

You will need 6 buttons. Rowan used 1” (2.5 cm) buttons with two holes in each button.

Finished measurements:
Bust circumference: 42.5(48.75, 55)“ 108(124, 140) cm
Finished length: 18.5(19.75, 20.75)” 47(50, 53) cm

Yarn used:
Rowan Cotton Wool
Shade 209 Nutkin - 13(15, 17) balls