This is a straight-cut dress with the same width all the way up to the underarms. The entire dress is worked with two strands held together - the ribbing with two strands of Alpaca Fine, and the body of the dress is worked with one strand of each yarn quality held together.
The dress is cast on using an Italian cast-on and is worked from the bottom up. You start by knitting the front and back separately, back and forth, to shape the slit. Once the ribbing for the slit is done, you join to work in the round up to the underarms.
At the underarms, the work is divided into front and back, and you continue in stockinette stitch, back and forth. The shoulders are joined using the three-needle bind-off.
Finally, ribbing is worked around the neckline and armholes.

Sizes:
1 (2) 3 (4) 5 (6) 7

Garment measurements:
Bust circumference (approx) : 82 (90) 100 (110) 120 (130) 140 cm
Length (approx): 96 (101) 105 (109) 111 (113) 115 cm

The model in the photo is wearing size 3, usually wears a size M/L, and has approx. 7 cm of positive ease at the bust.

Yarn requirements:
The dress is knitted with Drops Alpaca bouclè 140 m/ 50 g and
Viking Alpaca Fine 166 m/ 50 g held together .

Alpaca bouclè: 150 (200) 250 (300) 350 (350) 400 g
Alpaca Fine: 200 (250) 300 (350) 400 (400) 450 g

Recommended needles:
Ribbing: 4.5 mm circular needles, 80 cm and 40 cm.
Dress: 6 mm circular needle, 80 cm.

Gauge:
Ribbing, worked with double strand of Alpaca Fine on 4.5 mm needles:
20 stitches = 10 cm.
Dress, worked with one strand of each yarn held together on 6 mm needles:
14 stitches x 20 rows = 10 cm.