The girl on the right is Erica, http://dev.dreamgirlsmembers.com/dvdtour/models/Erica.html
The girl on the left is Lindsey, http://dev.dreamgirlsmembers.com/dvdtour/models/Lindsey.html
The girl in the middle is Kassie, http://dev.dreamgirlsmembers.com/dvdtour/models/Kassie.html