Here is a simple way to re-size a skirt that is too big.
Use a seam ripper to open up the seam (on the inside of the skirt), near the top. Open the seam on the other end as well. Many skirts have a band around the top. This band will become a channel for a cord. Use a safety pin to thread the cord (or ribbon or shoe lace…) through the channel. Use a few small stitches to tack the cord to the channel about midway along. This prevents the chord from working its way out when washing. The chord can be tightened to fit perfectly to your waist size.
The bow should be on the inside of the skirt once zipped up.
I admit that when I’m at thrift shops and second-hand stores looking for items to re-purpose, I sometimes find a fun skirt (often too big) that I like. This skirt is one such find.
Skirts are comfortable to wear when the weather is nice and I like having some that I can wear in the garden or on the beach and not care about getting dirty.
This is useful if you lost weight or you got some nice skirts from a friend…