From the Knit Rowan website:
Knit this longer length ladies top by Heather Dixon in Creative Linen. Available as a paid download it features a graduated ‘bubble’ pattern and tonal stripes. It would be suitable for the knitter with some experience.

Finished chest width dimensions:
43.5: 45: 47: 50: 53: 55.5: 58.5: 62.5: 64.5: 67 cm
17:17½: 18½: 19½: 21: 22: 23: 24½: 25½: 26½ inches

Yarn information:
Photographed with Rowan Creative Linen
A - Stormy 635
2, 2, 2, 2, 3, 3, 3, 3, 3, 3 skeins
438, 438, 438, 438, 657, 657, 657, 657, 657, 657 yards

B - Darkness 636
1, 1, 1, 2, 2, 2, 2, 2, 2, 2 skeins
219, 219, 219, 438, 438, 438, 438, 438, 438, 438 yards

C - Foggy 624
3, 3, 3, 3, 4, 4, 4, 4, 4, 5 skeins
657, 657, 657, 657, 876, 876, 876, 876, 876, 1095 yards