What is kessler twins married?

The Kessler twins, Alice and Ellen, were a German singing duo in the 1950s and 1960s. Despite rumors of romantic relationships with famous men such as Elvis Presley and John F. Kennedy, both sisters married men who were not in the entertainment industry. Alice Kessler married a Swiss property developer named René Haussener in 1967, while Ellen Kessler married a German businessman named Heinz Kösters in 1972. Both couples have reportedly remained happily married.