Actress Amanda Bynes has turned to President Barack Obama for help after she was officially charged with driving under the influence.

The "Hairspray" star was hit with one count of misdemeanour DUI on Tuesday, stemming from her arrest in April after she accidentally drove into a police car.

Bynes faces a maximum of six months behind bars if convicted, but she has taken to Twitter.com to protest her innocence.

She writes, "I was not in any hit and runs. I don't drink so the DUI is false."

The 26 year old then sent a tweet to Obama in an appeal for justice, adding, "Hey Barack Obama... I don't drink. Please fire the cop who arrested me. I also don't hit and run. The end."

District Attorney's officials are seeking a sentencing enhancement because Bynes allegedly refused to take either a breathalyzer or a blood test at the scene.