NEW YORK - Nicole Richie and her fiance, Adam Goldstein, have called off their nine-month engagement.

Richie's publicist, Cindy Guagenti, confirmed to The Associated Press on Wednesday that the couple have split. She said the breakup had been in the works for several days, but would not give any further details.

Richie, co-star of the reality series "The Simple Life," and Goldstein, a professional club DJ who goes by the name DJ AM, had dated for a year before becoming engaged last February.