38D/40D and XL fit like a glove!!! I love all your fashions and it always helps to read other reviews to find the perfect fit, cause I can range from wearing a small if the fabric is stretchy and if it’s a tight fit with no stretch, I normally aim for L/XL cause of my heavy top. I wore this in Las Vegas and received so many compliments. I just posted a pic on my IG under username Langluuy. It’s my new favorite dress! No bra needed too! 😍 TY fashion nova😊