Trump vs. Ivana
Though the Donald and his ex-wife Ivana have since made amends, their split in the early Nineties was one of the signature nasty divorces of the era. They married in the late Seventies and rose to become the embodiment of a gaudy high life over the following decade and a half. Their ugly divorce proceedings became the stuff of legend, with Ivana walking away with a settlement that reached well into the tens of millions. The two fought regularly, including over whether a ceiling mural in Trump Tower should be of cherubs or warriors. (Ivana, who preferred cherubs, lost that argument.)
Recently, the Daily Beast dug up comments Ivana once made about Trump having "violated" her sexually during one of their disputes; she has since said the act wasn't rape in the "criminal sense." She also said she thinks he would make an "incredible president."