I used Debbie Bliss EcoCotton Aran, which had a slightly smaller gauge than the recommended yarn, so I just added extra stitches when I cast on to make a total of 40 stitches, which added one stitch to both fronts and sleeves, and two stitches to the back section. I had the buttos in my small stash, which I definitely want to build up. Its great not having to go shopping for buttons once you've finished a project.
Here are some photos of Noah wearing the cardi. I think he looks delicious!
Above; with my sister