You look great in your black dress, it looks like a different garment when you combine it with T-shirts and when you don't, and the best thing is that you feel comfortable.
I also have a little black dress that helps me when I'm in a hurry and I don't know what to wear, without a doubt the most important thing is comfort and practicality, and if it's a garment that looks super cute on you, you have a treasure. 🤭