From the Knit Rowan website:
Crochet this womans openwork sleeveless top from Rowan Knitting & Crochet Magazine 57, a design by Lisa Richardson using Revive (silk cotton and viscose) and Pure Linen (100% Linen ) with a v-neck and multi coloures stripes. This crochet pattern has a two star difficulty rating.

Finished chest width dimensions:
42.5: 51: 59.5: 68 cm
16½: 20: 23½: 27 inches

Yarn information:
Rowan Purelife Revive
A - Rock 465
2, 2, 2, 2 skeins
274, 274, 274, 274 yards

C - Pearl 479
2, 2, 2, 2 skeins
274, 274, 274, 274 yards

E - Shale 481
2, 2, 2, 2 skeins
274, 274, 274, 274 yards

Rowan Pure Linen
B - Sahara 389
2, 2, 2, 3 skeins
284, 284, 284, 426 yards

D - Arizona 395
2, 2, 2, 2 skeins
284, 284, 284, 284 yards

Gauge notes:
2 pattern repeats to 11.5 cm and 2 pattern repeats (8 rows) to 8.5 cm measured over design pattern using recommended crochet hook.