This video has an interesting technique to make an historically inspired skirt with an extension so that it can be worn at almost floor length or at a more modern length.

youtube.com/watch?v=bQhbFSh5v2…

She used button loop trim, but it reminded me a bit of the way period manuals suggested to use lace and a ribbon to join together the top and skirt / legs parts of underwear, to avoid having multiple waistbands.

(the actual method is at 11:37, if you don't care about the whole skirt story)