Donald Trump's 58-year-old ex-wife IVANA is marrying for the third time - to 35-year-old dancer and model ROSSANO RUBICONDI. The couple will exchange nuptials at Donald Trump's Florida estate, where the billionaire and his third wife Melanie Knauss held their wedding reception in January 2005. Ivana tells the New York Daily News, "I feel great. We've been together five years."