The women have voiced heroines spanning nearly three decades of films, from The Little Mermaid (1989) to 2016's Moana.
Snow White and Cinderella were absent, but Disney claimed it was the largest gathering of its "royals" in one place.
Paige O'Hara (Belle in Beauty and the Beast), Irene Bedard (Pocahontas), Mandy Moore (Rapunzel in Tangled), Auli'i Cravalho (Moana), Sarah Silverman (Vanellope von Schweetz in Wreck-It Ralph), Kristen Bell (Anna in Frozen), Kelly Macdonald (Merida in Brave), Anika Noni Rose (Tiana in The Princess And The Frog), Linda Larkin (Jasmine in Aladdin), and Jodi Benson (Ariel in The Little Mermaid) joined the event.
They are resuming their roles for a new film which Disney said would "break down" the princess stereotype.
Next year's release, Wreck-It Ralph 2, will feature all the Disney princesses in a scene where they wear T-shirts - not dresses - and discuss the "challenges of being perfect".