Select the clothing in the scene, then in the Pose library navigate to DAZ's Victoria 4 > Magnetize Clothing. You'll see ten entries, try each, one will have an effect on the clothing. If the clothing was the first figure into the scene then the first pose is probably going to do it, second one into the scene then the second.

The above is called magnetizing the clothing.

Miki3 and at least two other Poser figures provided with the program use a similar method. The only difference is that only one magnetize pose is required for each. Probably because Smith Micro knew how to use their own program. Stupid or innovative? Your call.

Hope that provides the information/explanation that you were looking for.