The reality TV marriage curse has struck again. Christopher Knight and Adrianne Curry have split, RadarOnline.com has confirmed.

The pair announced their separation on their fifth wedding anniversary.

PHOTOS: Adrianne Curry's Awesome Bikini Bod

"Actor Christopher Knight and his wife, model and television star Adrianne Curry have announced today on their fifth wedding anniversary that they are separating," the couple's rep Phil Viardo told Hollyscoop breaking the story.

Viardo added that the marriage had been a tough road from the start, and in fact, Adrianne had revealed in 2007 that they were already in counseling.