This dress is very comfortable has the most gorgeous slit. Very timeless look that you can repeat wear. I went with a Small. It stretches a little with wear and doesn’t offer much support (meant for a smaller chest girl I’m sure). don’t size up if between sizes. I’ve been looking for a gorgeous strappy black heels that are actually comfortable to wear. I bought 2 heels from Mango before this trip and LOVED both. I will definitely be a returning customer