Another good way to make sure she is noticed is to make sure her bare bottom always touches the thing she is siting on. This will cause the skirt to rise up in the fron and look really good from the back.
The other option is that when your girlfriend is walking next to you with a skirt on you place you hand on her bare ass lifting the skirt as you walk.
The other option is that when your girlfriend is walking next to you with a skirt on you place you hand on her bare ass lifting the skirt as you walk.