Have you ever looked at the formal ware rack at the thrift store? Most of the dresses are awful, or just way to formal to really wear to anything, but the materials they are made of are usually really beautiful. I had been looking for some lace when I came across this beauty, the bottom has three layers- lace, satin, tulle.
What you need-
Crazy second hand dress with satin and tulle layers (pretty much every formal dress has this)
Length of elastic- how ever long you need for a waist band (measure waist and minus 5 inches for stretch)
I could not find my elastic so I had to get creative and rip some out of a fleece hoodie that was in the supply pile, look around you'll find something that will work.
Using the satin you just cut, cut a second one half it's length (shown in second photo). Turn your satin piece inside out (right sides together) and sew the open side closed.
Now the fun part, take the shorter of the two satin skirts and the bottom layer of your tulle to your sewing machine. Right sides together, sew the strip of tulle to the satin "skirt". The strip will be long enough to go around the skirt two or three times, just keep sewing until you get to the end.
How's that for instant gratification! Your half done. This will be the outer layer of your skirt, set it aside for now and grab the other section of your tulle and the longer satin skirt. Put the tulle layer inside the satin skirt and tack them together with a quick stitch.
Put the one you just sewed inside the outer skirt lining the waist area. Tack the two together around the waist with a quick stitch. Now your ready to add the elastic waist. Your elastic should be 5 inches smaller than the waist it's intended for. Fold the unfinished edge of your skirts waist over 1/4 inch, then again the width of your elastic (creating a tunnel for the elastic) and pin. Do this all the way around the waist.
Note- I only had my elastic in the waist to make sure it fit, take it out before you pin and set it aside.
Take the skirt to your sewing machine and sew your waist close to the edge to make sure it stays wide enough for your elastic. Leave an inch open so you can get the elastic in!
I think it took me longer to write this than it did to make it!