Attach a sheer curtain panel behind your existing curtains using a bungee cord. Just run the cord through your curtains, attach the bungee hooks to the sides of the rod and stretch it across, and voilà, you have a beautiful sheer inner curtain panel!
Where have you been all my life? Pop top as picture hanger. Ive done this for years, started it in college when I didnt have hangers too lazy to get some. Why do that when you have all those leftover beer cans.and an idea.