I found some long-sleeved tees at Target for $5-6, regular price in the late fall. Regular price. Not even on sale. So I snagged a few. One became the flower shirt and others were incorporated into my winter wardrobe for layering. I set aside some black ones to make the cardigan. I bought a size larger than my normal size so it wouldn't be too snug to wear a shirt under it comfortably.
And while I love her cardigan as is, I decided to spruce mine up with some ruffles (which go all around the collar as well). They are hard to see because of the color.
And a vintage button closure.
I made this back in December and wore it to my town council meeting and either Christmas Eve or Christmas Day. One of those days. I can't remember which it was.