From the Knit Rowan website:
Knit this women’s lace sweater dress from Alpaca Colour, a design by Lisa Richardson using the stunning yarn Alpaca Colour (baby alpaca). With a beautiful diamond lace stitch pattern on the main body, stocking stitch full length set-in sleeves and round neck, this knitting pattern is for the intermediate knitter.

Finished width dimensions:
47: 52: 58: 64: 71 cm
18.5: 20.5: 23: 25: 28 inches

Yarn Information:
Photographed in Ruby 138
11, 12, 13, 14, 15 skeins
1441, 1572, 1703, 1834, 1965 yards

Gauge notes:

• 20 stitches and 28 rows = 4 inches (10 cm) over design pattern using larger needles.
• 22 stitches and 30 rows = 4 inches (10 cm) over stockinette stitch using larger needles.