Will third time be the charm for Uma Thurman?

The actress is engaged to her millionaire boyfriend, Arpad Busson, the New York Daily News confirms.

Uma showed off her new sparkler — described as so big "she can’t fit it through the sleeve of her coat" — Thursday evening at Elton John‘s 10th White tie and Tiara benefit.

Arpad, nicknamed "Arki," and Uma, 38, have been dating for a year after meeting at a dinner party hosted by Gianni Versace and Tony Blair in Milan. It will be his first marriage and her third.

The Swiss financier was once engaged to supermodel Elle Macpherson, with whom he has two sons, Arpad Flynn Alexander, 10, and Aurelius Cy Andrea, 5.

Uma, who dated hotelier Andre Balazs for three years before meeting Arpad, was married to Gary Oldman for two years in the early 90s and to Ethan Hawke from 1998-2004. She and Ethan share custody of their children, Maya, 9, and Levon, 6.

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