First things first.

1. Select the shorts in your scene.

2. Choose Menu command Figure > Copy Joint Zones From.

3. A dialog pops up. If the shorts are conformed to La Femme (they should be), the dialog will automatically select La Femme as the figure to copy joint zones from.  If not, use the down arrow to select the La Femme figure from the menu. Accept the default target tesselations, and choose OK.

If that doesn't help the situation, let us know. Because you'll have to edit weight maps if that doesn't do the trick and that will get a little involved.