Actress Heather Locklear, 47, was arrested on suspicion of driving under the influence of prescription drugs Saturday afternoon. She was spotted driving erratically while leaving a parking lot by an eyewitness. Police found her parked on the side of a California highway a short while after and arrested her. Locklear was treated at a medical center in June for depression and anxiety, stemming from her then-husband’s affair with her best friend, Denise Richards. Locklear and now ex-husband Richie Sambora were married 11 years and have a 10-year-0ld daughter.