For what it's worth, here's my description/instruction for the dress:

Dynamic cocktail dress for LF2 as a bare prop file. When creating a simulation, activating cloth self-intersection is recommended. A collision distance of 0.3 and a collision depth of 0.5 seem to work well. To change the length, find the "SkirtLength" node in the material room and change the length value. Use the same length for both the main and the hem materials. You can also copy the node into other materials, passing any existing alpha input through, to enable the variable length functionality for them. Note that this relies on special UV maps, so it is not likely to work for most other clothing props.

-- I'm not mad at you, just Westphalian.