Julianne Hough Joins Leona Lewis for Rebels With a Cause Gala

Julianne Hough and Leona Lewis pose together on the red carpet at the Rebels With a Cause Gala on Wednesday (May 11) in Santa Monica, Calif.

The 27-year-old Grease: Live star and the 31-year-old singer were joined by Kristin Chenoweth, sisters Erin and Sara Foster and Arnold Schwarzenegger at the charity event.

PHOTOS: Check out the latest pics of Julianne Hough

Rebels With a Cause is an organization dedicated to transforming cancer research and was raising funds and awareness for the cause at the gala.

FYI: Julianne is carrying a Lee Savage clutch, and wearing a Milly dress and Dana Rebecca Designs jewelry. Leona is wearing a Milly dress.

15+ pictures inside of Julianne Hough and Leona Lewis arriving at the Rebels With a Cause Gala…