Actress Jessica Biel has finally opened up about her baby boy. Actress Jessica Biel has finally opened up about her baby boy. Jessica Biel Is Looking Mighty Fit Four Months After Giving Birth The new mom, who gave birth last April, has been keeping quiet since she brought her son, Silas, into the world, but in an interview with E! News on Friday, she dished on what the most magical moment of being a mom is.