Amy Winehouse has gone back into rehab

The troubled singer ' who has a history of drug addiction and heavy drinking - checked herself London's The Priory clinic earlier this week ' but reportedly stunned onlookers when she bought a small bottle of vodka from a small shop in Southgate, north London, on her way to the facility.The source said: "She seemed out of it. She was stumbling about, slurring her words."I was shocked to see her