Even beautiful people get sad.

Heather Locklear has checked into a rehab facility in Arizona psychological treatment.

"Heather has been dealing with anxiety and depression. She requested an in-depth evaluation of her medication and entered into a medical facility for proper diagnosis and treatment," the actress' rep said in a statement. "This is a confidential medical matter and no further statement will be released."

In the end, is there any doubt this this is all the fault of Denise Richards for stealing Locklear's husband, Richie Samboa?