Women's apparel retailer Bebe Stores Inc today reported that net sales for the fourth quarter of fiscal 2002 were $73.5 million, up 5.5 per cent from $69.7 million reported for the fourth quarter a year ago.  Same store sales for the quarter decreased by 7.9 per cent compared to the corresponding period of the prior year. Net earnings for the fourth quarter decreased 31.0 per cent to $4.0 million, compared to $5.8 million for the same period a year ago.