Jessica Alba has our vote with this behind-the-scenes look at her PSA photo shoot for the Declare Yourself campaign! ET talks to Jessica about how motherhood has changed her view of politics. 

Jessica and husband Cash Warren welcomed their first baby girl, Honor Marie Warren, in June of this year.

'The Fantastic Four' star is the new face for Declare Yourself, a nonprofit organization that encourages young people to vote.

The campaign called Only You Can Silence Yourself conveys powerful messages about the importance of voting.

Previous Declare Yourself campaigns starred Christina Aguilera and Outkast's André 3000.

On September 24, Jessica will be co-hosting a Declare Yourself party with Hayden Panettiere and Norman Lear at The Green Door! The goal of the party is to have young Hollywood stars bring an additional spotlight to the cause.

And don't forget! Oct. 4th is the last day to register to vote on Declare Yourself.