Tiffany: Teenage pop singer enjoys life as an overnight sensation

When pop singer Tiffany embarked on her first tour last year, her record company used a gimmick to promote her: It sent her to shopping malls across the country where she sang to prerecorded music. Now, with a self-titled debut album that has sold 4 million copies, along with two No. 1 singles and a Top 10 hit, the 16-year-old is performing across the country with a seasoned six-piece band.