Joshua Jackson Buys $45,000 Necklace for Diane Kruger (PHOTOS)
During the gala's auction, the Fringe star, 33, won a necklace by designer Carla Amorim with a bid of $45,000. The necklace has 11.7 carats of white diamonds, set in 18-karat rose gold.
He was reportedly overheard saying it was an engagement present for the Inglourious Basterds actress, but sources close to the couple tell Celebuzz the engagement buzz is not true.
The couple, who have been dating since 2006, were affectionate all night at the gala benefit for the Prince Albert II of Monaco Foundation and the William J. Clinton Foundation at the Hotel de Paris.
Jackson looked dapper in a black suit, while Kruger, 35, who wore a cream-colored Prabal dress.
Click through the gallery above to see celebrities' most outrageous gifts.