Pattern has instructions for a simple smock tunic and long vest. You will need two stitch holders for the smock and 1 button and a short length of smooth DK yarn for the vest.

Finished measurements:
Bust circumference:
34.5( 38.25, 42.25, 46.25, 50.25, 54.25)”
87( 97, 107, 117, 127, 137) cm
Smock length:
28.75( 29.25, 29.5, 30.5, 30.75, 31.5)”
73( 74, 75, 77, 78, 80) cm
Vest length:
28( 28.5, 29.25, 29.5, 30.5, 31)”
71( 72, 74, 75, 77, 79) cm
Sleeve length, including border: 5”/(13 cm) for all sizes

Yarn used:
King Cole Opium/Opium Palette
Smock
Shade 1393 Lilac Wine - 4( 4, 4, 5, 5, 5) balls
Vest
Shade 194 Pebble - 3( 4, 4, 4, 5, 5) balls