Van Roalte slip size 34

Van Roalte slip that was purchased on Etsy. Item was previously dyed before I purchased it. There is a small spot on the back of the slip that looks like it was from part of the dye mark (mark is included in the pictures). I have never worn the item. Item comes from smoke-free home. Tag on item says 34, I marked 34B as the size seems to be the best choice.