Uma Thurman is engaged to her Swiss multimillionaire boyfriend, Arpad "Arki" Busson, her rep told People magazine.

"I can confirm she is engaged," Stephen Huvane said on Friday. The New York Daily News was the first to report the engagement.

The ring is an 8-plus carat center stone surrounded by 20 smaller stones, People reported.

"It's the most beautiful piece I've ever seen," a close source told the magazine of the diamond ring. "Arki did a wonderful job."

The pair began dating last summer after attending a private dinner together in Milan, according to People.

This will be the third marriage for Thurman, who has a son and daughter with Ethan Hawke, whom she divorced in 2003. Her marriage to Gary Oldman ended in 1992. Busson has two sons with supermodel Elle Macpherson, from whom he split in 2005.

Click here for the People report