This sweater was a birthday present I had to make myself this year, when I saw a VERY similar one, worn by Christy Turlington :) (next to last pic)

20% from the income of the first day will be donated to “Every mother counts”, a non-profit organization dedicated to making pregnancy & childbirth safe for every woman, founded by Christy Turlington in 2010.

…

The BiRTHDAY sweater is worked seamlessly in rounds, in one piece from the top-down in half brioche stitch pattern. After the collar is worked, the yoke is shaped by raglan increases down to the sleeve separation. The sleeve stitches are then placed on hold, underarm stitches are cast on, and you continue to work the body to the bottom ribbing. After the body is completed, sleeve stitches are placed back on the needles to work in half brioche pattern in the round.

It can be worn from both sides.

Details:

SIZES
XS (S, M1, M2)(L, XL, XXL)(3XL, 4XL, 5XL)
Finished bust circumference in cm/inch:
87 (94, 99, 106)(111, 118, 127)(137, 150, 164) cm / 34.25 (37, 39, 41.75)(43.75, 46.5, 50) (54, 59, 64.5)”
#sizeinclusive
Intended to be worn with approx. 12-16 cm (4.75-6.25”) of positive ease. (Sample shown in Size M2 with 16 cm (6.25”) of positive ease)

GAUGE:
23 sts x 44 rnds =10 cm (4”) square in Half brioche pattern on main needle and blocked.

NOTIONS:
13 stitch markers, Waste yarn or stitch holders

SUGGESTED NEEDLES:
3,25 mm (US 3) - 40 cm (16”) and 80 cm (32”) circular for main fabric and DPNs for sleeves (or longer circular for magic loop)
+
2,5 mm (US 1.5) - 40 cm (16”) and 80 cm (32”) circular and DPNs for collar and ribbing (or longer circular for magic loop)

YARN:
7 (8, 8, 9)(9, 10, 11) (11, 12, 13) balls of
De rerum Natura, Ulysse (100% merino), 185 m (202yds)/50g, shown in Color: poivre blanc
or approximately m/yds:
1240/1360 (1340/1470, 1440/1580, 1530/1670) (1630/1780, 1740/1900, 1870/2050)(1990/2180, 2190/2310, 2360/2580) of a similar yarn.

Techniques:
double increases,
knit one row below