This is a question for Barbara and those of you who sell vintage hats. When we went to Ecuador 2 yr. ago, my dog sitter asked for a panama hat. Since she has a large head, we bought the largest one we could find in off-the-rack hats. It's still a little small. It has a ribbon and as I remember from my hat making days the ribbon can be used to resize the hat. If we take the ribbon out, do we steam the hat to make it larger. I don't have a large block to hold the shape. Any recommendations?