Everlane The Washable Silk Relaxed Shirt

I wore it once and had it dry-cleaned, but I noticed there’s a small stain on the back. I’m not sure if it will come out or not. Please check the photos. The Washable Silk Relaxed Shirt Size 6 Burnt Sugar $150+ Relaxed fit Customers say this style runs large. Take a size down for a more fitted look. 100% Silk Model is 5′7″, wearing a size 2