Lawyers for Britney Spears have demanded that a St. Petersburg, Florida radio station remove advertising billboards portraying the singer with a shaven head.

The billboards feature three identical photos of a snarling Spears, next to radio station WFLZ's logo and a photo of morning talk show host Todd Schnitt. Atop the photos are captions reading "Total nut jobs," "Shock Therapy," and "Certifiable."

A spokeswoman for WFLZ parent company Clear Channel Communications, said it had received a letter dated June 14 from law firm Lavely & Singer, demanding that the billboard be removed. It further stated that images of Spears may only be used with consent.

In an interview, Schnitt said that Clear Channel had already pulled down the billboards. "I'm not happy with that," he said.

Britney Spears is reportedly recording her fifth album. She is attempting a comeback after earlier this year shaving her head and entering a Southern California rehab facility.