You just found out a friend or family member is having a baby. You want to knit the new ray of sunshine something quick but also original and with a bit of challenge in the knitting, not to make it too boring. The baby looking adorable and cozy in it will be a big bonus!
Since the mom will completely adore the vest, you’ll love to know that it comes in sizes from newborn to 18 months, so you can keep knitting the baby little vests while it grows, allowing it to use it while it hops around exploring the world :)
And as if this wasn’t enough, it has modifications to knit it for a boy or a girl.
This vest is knit bottom-up with no seams. The stitch pattern is designed to be stretchy, allowing the baby to grow comfortably in it and use it for a longer period of time. It has a button at the neck, allowing for more room to put it on the baby, very important, especially for newborns and first time moms. :)

FINISHED MEASUREMENTS

Chest circumference: 13 1/2, (15, 17, 18 1/2, 20 1/2, 22 1/2) inches; 34 (38, 42, 46, 51, 56) cm.

Total length of vest: 8 (9, 9 1/2, 10 1/2, 11, 12) inches; 20 (22, 24, 26, 28, 30) cm. 

Neck opening circumference (when worn buttoned): 12 (13 1/4, 14 3/4, 15, 16, 17 1/2) inches; 30 (33, 37, 37 1/2, 40, 44) cm. 

MATERIALS
Yarn: 2 skeins. Worsted Merino. 1 (1, 1, 1, 2, 2) Skeins. You will need 130-400 yards. 
Needles: US 7 (4.5mm) needles.
Other notions: 1 button, 1/2 inch wide