Adrianne Curry and Christopher KnightActor Christopher Knight and model Adrianne Curry have decided to call it quits on their marriage.

Hollyscoop.com is reporting that the couple's manager, Phil Viardo, confirmed the news of the separation on May 29, the day the couple celebrated their five-year wedding anniversary.

Viardo said, "Actor Christopher Knight and his wife, model and television star Adrianne Curry have announced today on their five-year wedding anniversary that they are separating."

He also released a joint statement from the couple which said, "After starting a relationship with what seemed to be irreconcilable differences, the couple has reached a period where those differences are no longer appreciated. The decision was mutually reached after it became clear to both that some perspective was needed in order to assess their unique union. Not unlike all marriages, work must be put in."