Justin Chambers claims he had a sleeping disorder. The "Grey's Anatomy" star says he had trouble sleeping that's why he checked into a psychiatric ward earlier this year.

The 37-year-old actor, who portrays surgeon Dr. Alex Karev on the hit medical series, checked voluntarily into UCLA's Resnick Neuropsychiatric Hospital in January. His publicist said at that time that it was due to exhaustion.

Katherine Heigl and new husband Josh Kelley paid tribute to their dead brother and sister at their Christmas wedding.

The "Knocked Up" star and the "Only You" singer exchanged vows in front of friends and family in a "winter wonderland" on December 23, but the ceremony also included a musical tribute to Katherine's brother, Jason, who died in 1986, and Josh's sister who died as a baby.