From the Knit Rowan website:
Crochet this pretty, summer, sleeveless top with gorgeous floral detail. Designed by Marie Wallin in Sienna 4 Ply, this design was originally featured in the brochure Summer Crochet and is now available as a free project in July 2013.

Finished width dimensions:
42: 47.5: 52.5: 58.5 cm
16.5: 18.5: 20.5: 23 inches

Yarn Information:
A - Sloe 670
8, 8, 9, 10 skeins
1224, 1224, 1377, 1530 yards

B - Frost 653
1, 1, 1, 1 skein
153, 153, 153, 153 yards

C - Alpine 671
1, 1, 1, 1 skein
153, 153, 153, 153 yards

D - Pebble 684
1, 1, 1, 1 skein
153, 153, 153, 153 yards