there are morphs in the body of the skirt including sitting morphs. There are also morphs in the hip of the skirt

The downlaod page, when you click on the pic of the skirt, has these instructions and morph listing

You'll find this item under the folder of Poser - Figures > Meanderings EveryDay.

• Load your Victoria 3 character
• With your character selected load the "Miniskirt 01" item
• Conform the "Miniskirt 01" item to your Victoria 3 character

After conforming, if you select the BODY of this item, you have access to 15 dials:

• Muscular1
• Barbarian1
• Pinup
• StomachIn
• TummyOut
• RectusAbdom
• HipNarrow
• HipSmall
• *Long
• *Sitting
• *SittingR
• *SittingL
• *Sitting2
• *Sitting2R
• *Sitting2L

NOTE: This item use JCM automatic morph system, you need to have your V3 character loaded and selected before loading and conforming this item.

There are no morphs in the shirt

In a world filled with causes for worry and anxiety...
we need the peace of God standing guard over our hearts and minds.
 
Jerry McCant