I wanted to design a basic T-shirt (with rolled sleeves ofc!) to wear with dungarees or jeans.

Vilja Tee is worked seamlessly from the top to down
starting from the the upper back, which is knitted flat until underarms. Stitches are picked up from the back shoulders for the right and left upper fronts, and then you work the neckline shaping and the rest of the upper front flat. Front and back pieces are joined on one needle and then knitted in the round until the hem.
Sleeve stitches are picked up around the armholes and are knitted in the round with either DPNs or using the Magic Loop technique.
The neckline is finished with ribbing.
Both written instructions and a link to a video tutorial is provided for the folded cuff.

SIZES:
XS (S, M, L, XL, 2XL, 3XL, 4XL) (Sample knitted in size S)
Recommended ease: 14 – 15 cm / 5.5 – 6 inches

FINISHED MEASUREMENTS:
Bust circumference: 90 (98, 108, 118, 128, 138, 148, 158) cm / 36 (39.25, 43.25, 47.25, 51.25, 55.25, 59.25, 63.25) inches

Sleeve circumference: 38 (40, 42, 45, 47, 49, 52, 56) cm / 15.25 (16, 16.75, 18, 18.75, 19.5, 20.75, 22.5) inches

Yoke depth: 20 (20, 21.5, 22, 23.5, 24, 25, 26) cm / 8 (8, 8.5, 8.75, 9.25, 9.5, 10, 10.25) inches

Neck circumference: 45 (46, 47, 48, 49, 50, 51, 52) cm / 17.5 (18.25, 18.5, 19, 19.25, 19.75, 20, 20.5) inches

Sleeve length from underarm: 6 cm / 2.5 inches (or desired length)

Length from hem to underarm: 32 (33, 34, 35, 36, 37, 38, 39) cm / 12.75 (13, 13.5, 14, 4.25, 14.75, 15, 15.5) inches (or desired length)

YARN:
Novita Cotton Feel (100% cotton, approx 120 m / 131 yds
per 50 g)
6 (7, 8, 9, 10, 10, 11, 12) balls
or
715 (785, 888, 994, 1101, 1205, 1324, 1450) m / 781 (858, 971, 1086, 1203, 1317, 1447, 1585) yds of similar yarn

NEEDLES:
3.5 mm / US 4 circular needle with 40 cm / 16 inch cable
for the neckline ribbing AND circular needle with 60 cm / 24 inch cable or longer for the hem ribbing.
4 mm / US 6 circular needle with 60 cm / 24 inch cable or longer for the body.
4 mm / US 6 DPNs for the sleeves (or a circular needle with 80 – 100 cm / 32 – 40 inch cable for using the Magic Loop technique)
Or needles that give you the correct gauge.

GAUGE:
20 sts and 29 rnds = 10 cm / 4 inches over stockinette stitch in the round with larger needles

NOTIONS:
Stitch markers, darning needle, T-pins and waste yarn or
stitch holders.