NEW YORK - Britney Spears stumbled outside a Manhattan hotel, nearly dropping her 8-month-old son and further fueling the ever-growing media scrutiny of her parenting skills. In photos splashed across the front page and inside the New York Post on Friday, the 24-year-old pop star is shown exiting The Ritz-Carlton hotel with Sean Preston in one hand and a glass in the other. As her bodyguards walked Spears to her car, she stumbled — her long pants apparently getting tangled in her open-toed shoes — and bent low as Sean Preston's head flung backward, knocking off his orange hat.