Katie Holmes is excited to announce her reprisal of the role of Jackie Kennedy in the upcoming mini series 'The Kennedys: After Camelot.' Holmes portrayed Jackie O six years ago in the original Reelz series 'The Kennedys.' While Holmes is prepared, she knows she is up for comparison against Natalie Portman's recent portrayal of the former first lady in the new film 'Jackie.' However, that doesn't intimidate her. Instead Holmes says, "It's just is a testament to how amazing Jacqueline Kennedy Onassis was and how much she meant to our country."