Paris Hilton has agreed to plead guilty to two misdemeanors stemming from her arrest last month at a Las Vegas resort, a Nevada prosecutor said. Under the terms of a plea deal worked out with prosecutors, the celebrity heiress will serve a year of probation and avoid a felony conviction, Clark County District Attorney David Roger said Friday. A plea agreement obtained by the Las Vegas Review-Journal shows Hilton will plead guilty to drug possession and obstructing an officer. She must complete a drug abuse program, pay a $2,000 fine and serve 200 hours of community service. Hilton, 29, was arrested Aug. 26 inside the Wynn resort, after police say a small plastic bag containing 0.8 grams of cocaine fell out of her Chanel purse as she reached for a tube of lip balm in front of a police lieutenant.