Elegant 3/4 Sleeve Cardigan - EVER BLUE

I apologize in advance because I got this not knowing if it's an L or XL. 😔 I put it on briefly, only just see if I can figure out the size -- and it fits, but no luck figuring out the size. Anyway, I think this is beautiful, but I don't wear anything that can go with it! It's a three-quarter sleeve, black cardigan that ends at the middle/bottom of the hips. The top half of the back has a see-through lacey, flowery pattern, and the bottom half of the back is just plain black. ♥️ for discount