Two legendary American Idol alums just got together on the show - and we absolutely love to see it. Current judge and former contestant Carrie Underwood posted the cutest picture of herself alongside Jennifer Hudson on X, to celebrate the Dreamgirls star's triumphant return to American Idol after she became one of the show's most successful former contestants. "I love a full-circle moment! " the country singer wrote on social media alongside the photo. "Excited to have the incomparable @IAMJHUD join us at the judges' desk tonight on @AmericanIdol! From that stage to this seat...