Two sisters so close they make porn films together have become deadly rivals as both strive to win Brazil's Miss BumBum contest. Photo shows Larissa Sumpani (left) and Rafaela Sumpani (right), undated. The two sisters represent Minas Gerais and Bahia at Miss Bumbum 2023. (@eusumpanioficial/Newsflash) The event decides which girl in Brazil is judged to have the sexiest rear end in the country. Previous winners have gone on to land…