Create a playlist and seperate model cards a minimum of the amount of girls you want on screen, e.g. playlist GirlA then GirlB then GirlA if you want 2 girls on at once or playlist GirlA then GirlB then GirlC etc if you want 3+ girls on at once. Then in the Now playing (far right tab) tick the repeat checkbox and it will play your list in order.
Repeat does make your playlist predictable but i don't know of any other way to restrict it the way you want