Kill Bill actress Uma Thurman and her multi-millionaire fiancé Arpad Busson have called off their engagement. “Uma and Arki (Busson) were due to attend a gala together on April 8, but Uma showed up without her engagement ring or her fiancé,” a source told Britain’s Mail on Sunday newspaper. Another source added, “Uma lives in New York while Arki lives in London… They have been at one or two events together, like Harvey Weinstein’s pre-BAFTA party in February, but on that occasion they looked miserable.” This is a second time Uma, 43, has broken off her engagement with French-born hedge-fund boss since they started dating in 2007. In 2009, the actress returned an eight-carat diamond ring to Arpad. Uma took it back in 2011, and by 2012 they were engaged again. At that time, Uma was pregnant with their first child, Rosalind. She has not been seen without her engagement ring since, until now. Uma has two children with actor Ethan Hawke – Maya Ray, 13, and Levon, 10. Arpad also has two children from his relationship with model Elle Macpherson. ~ Alexandra Sharova