After spending nearly three hours in prosthetic and makeup dressed as The Grinch and Cindy Lou Who, the Currys revealed their identities to 2,000 people.
RELATED: Golden State Warriors star Steph Curry and family enjoy vacation in Maui
The event included ornament making, family portraits, cookie decorating, and even a visit with Santa Claus.
Families also went home with gifts like toys and games.
This was all made possible by "Eat. Learn. Play." - the foundation run by the Currys that's focused on youth in under-served communities.
The video is from OpenLight Films, and the pictures in the video slideshow are from Charlotte Fiorito and Noah Graham, respectively.
WATCH: Video slideshow of Curry family as Dr. Seuss characters down below.