From the Knit Rowan website:
Knit this womans lace back tank from Rowan Knitting & Crochet Magazine 57, a design by Amy Herzog using Truesilk (100% silk) with stocking stitch front. This knitting pattern has a two star difficulty rating.

Finished dimensions:
44: 49: 55: 61.5: 68.5 cm
17½: 19½: 21½: 24: 27 inches

Yarn information:
Photographed in Whisper 332
6, 7, 8, 9, 10 skeins
984, 1148, 1312, 1476, 1640 yards