Christina Aguilera stars in a new ad with her son Max Liron Bratman to urge Americans to cast their votes. The 27-year-old singer and her baby will appear this summer in the new TV ad campaign Rock The Vote. In the commercial, Christina sings America The Beautiful to her child, who is wrapped in an American flag and cradled in his mom’ arms. She finished ad saying to the cameras, "It's time to make history. It's time to rock the vote." As regarding her decision of using her son on the spot, she explained it’s "inevitable that he will be subjected to some amount of press," so it might as well be channeled into a good cause. "This election in particular is such an exciting and historical one, and so I was proud to have my son and I stand together for such a powerful moment and message in time," she added.