Ciara & Kristinia DeBarge will join “The Circus Starring Britney Spears” for the upcoming US & Canada tour dates, which kick off August 20th! Ciara opened for Britney in London, but Kristinia is new to the show. See what she had to say about joining Britney HERE. Three ring circus, three stars – sounds about right! Have you seen Britney’s Circus yet? Let us know what you thought!