You will need 3 buttons for the cardigan and stitch holders for the top.

Finished measurements:
Bust circumference (at gathered seam): 30( 34.25, 38.5, 42, 46.5)“ 76( 87, 98, 107, 118) cm
Finished length: 18( 19, 19.75, 20.5, 21.25)” 46( 48, 50 ,52, 54) cm

Yarn used:
King Cole Opium
Cardigan
Shade 198 Lilac - 3( 4, 4, 5, 6) balls
Top
Shade 1637 Khaki - 3( 4, 4, 5, 6) balls