Age: 20
Occupation: Musician
Previous TIME 100 Appearances: 0
Barely out of her teens, Swift has become the first major country-pop crossover since the Dixie Chicks hit the Top 40 radio waves more than a decade ago. Swift's snagging of the 2009 MTV VMA Best Female Video award from Beyoncé and the 2010 Album of the Year Grammy from Lady Gaga proves that her fan base includes more than giggly girls in braces. If you're too old to identify with the kind of teenage love she sings about, at least you remember what it felt like when you did.