Past performance, of course, is no indication of future results, but fragrance industry executives must be smiling over results from a recent study by The NPD Group. During the first 10 months of 2011, (January to October), total prestige fragrance dollar sales in U.S. department stores jumped 10% to $1.7 billion. For the same period, unit sales rose 6% to nearly 30 million units. According to NPD, the results marked the first year-to-date January to October dollar gain in three years for the...