Showbiz
Rex Features
The actress, 31, became engaged to Busson last June following earlier marriages to Gary Oldman and Ethan Hawke.
US reports claim that the couple are holidaying on the Bahamian island of Eleuthera and have planned a low-key ceremony for Saturday.
Hedge fund financier Arpad, 41, has two sons from a relationship with supermodel Elle Macpherson.
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