Over time, the Disney Family website has added paper models of most, if not all, the Disney Princesses. Below are quick links to the templates for the Princesses. Thanks to Cayley for doing the hard work of locating them all!
Aurora (Sleeping Beauty)
Belle (Beauty and the Beast)
Tiana (The Princess and the Frog)
Ariel (The Little Mermaid) - Not pictured
Mulan - Not pictured
Pocahontas - Pictured below
Merida (Brave)- Pictured below
UPDATE 7/25/12: Pocahontas and Merida have been added to the list!