Simplify the following text for a Grade 9 native English-speaking person.
Original: Ivana Trump ( born Ivana Marie ZelnÃ Ä kovÃ ; February 20 , 1949 ) is a former Olympic athlete , socialite , and fashion model noted for her marriage to mogul Donald Trump .
Simplified: Ivana Trump ( born February 20 , 1949 ) is a Czech-American businesswoman , former Olympic skiier and model . She is most famous for her marriage to Donald Trump , which ended in divorce .