The Avatar actress appears in a short public service announcement (PSA) video, which will air in selected U.S. movie theatres, to promote Brave Beginnings, a program funded by the Will Rogers Motion Picture Pioneers Foundation, which gives grants to hospitals to help pay for equipment and services to care for premature babies.

Saldana, a new mother to twins, says in the video, "A day at the movies, action, adventure, and superheroes, but I want to talk to you about a different kind of hero. Instead of capes, they wear blankets. One in eight babies is born prematurely but many hospitals lack the proper equipment to care for them... Every superhero needs a sidekick, I'd like you to fill that role by giving generously to save our little heroes."

Saldana gave birth to twins Bowie and Cy in November (14).