'Vampire Diaries' star Katerine Graham calls off engagement?

Katerina Graham has sparked split rumours from her fiance of two years Cottrell Guidry after attending Diamond Ball without him.

Graham, 25, engaged to Guidry in 2012.

She had said in an interview that preparation for her wedding was done, reported Ace Showbiz.

Graham attended Rihanna's Diamond Ball on December 11. Instead being accompanied by Guidry, she went with her close friend Nikki Reed and dodged question about her wedding planning.