I love this outfit! It's modest, comfortable, warm, autumn-ish (haha), and cute (at least, in my opinion)! I'd never worn the shirt before today, and I thought it was in-season and would go well with my vest (both the shirt and vest are hand-me-downs).
The color of my shirt reminds me of autumn leaves, and I like how both my boots and vest hint that the weather's getting cooler ☺.
My vest and boots go great together as well, since they are both black.