LeAnn Rimes has voluntarily entered treatment to cope with anxiety and stress.

“LeAnn has voluntarily entered a 30 day in-patient treatment facility to cope with anxiety and stress,” her rep Marcel Pariseau said in a statement.

“While there will be speculation regarding her treatment, she is simply there to learn and develop coping mechanisms. While privacy isn’t expected, it’s certainly appreciated.”

Rimes checked in Wednesday, the day after her 30th birthday, and it had nothing to do with the booze in that photo to the right.

“This is just a time for me to emotionally check out for a second and take care of myself and come back in 30 days as the best 30-year-old woman I can be,” she says.

“All the things in my life will be there when I get out, but you know what? I’m hoping they’re not going to affect me as much,” she adds.

“I’ll have the tools to know how to deal with them.”

Rimes’ rep, who acknowledged that the star has been criticized for her thin frame in the past, is not entering treatment for an eating disorder, nor for substance abuse.