Julianna Margulies/Billie Lourd/Alejandro Aranda

Actress Julianna Marguiles ("The Hot Zone"); actress Billie Lourd ("Booksmart"); "American Idol" runner-up Alejandro Aranda performs;Actress Julianna Marguiles ("The Hot Zone"); actress Billie Lourd ("Booksmart"); "American Idol" runner-up Alejandro Aranda performs;Actress Julianna Marguiles ("The Hot Zone"); actress Billie Lourd ("Booksmart"); "American Idol" runner-up Alejandro Aranda performs;