I decided to revamp them to tide me over until I find a sale, so I spent a few hours making them look ruffled.
Here's the before:
You can see how I did it after the cut.
First I would like to say that it takes a lot of fabric to do this. I was given huge, huge amounts of off-cut fabrics from a factory that makes linens, so I can do projects that take crazy amounts of fabric and not think about cost. The strips I have are 16 inches wide, and 72 inches long, and I used two and a half for each shade.
So to do this, cut out a ton of circles. They don't need to be perfect, so don't fuss with them.
Fold the circle in half, then in half again, and put a tiny dot of hot glue about 1/4 inch from the point.
Place your index finger and thumb in the folds and squeeze the fabric together, like so, to bond the edges:
Add another dot of glue to the tip.
Stick to the lamp shade.
Alternate the direction of the folds, having some place vertically and some horizontally.