Most Beautiful 2007

AVRIL LAVIGNE

Her new single "Girlfriend" is a hit. She's a newlywed (having married Sum 41 frontman Deryck Whibley, 27, last year). So for Lavigne, 22, her "new" image is just the latest, natural next step. "Being a girl is awesome. There's so much – bags, shoes, makeup, accessories," she says. "I love putting lotion on – I'm obsessed with lavender. It's a lot of fun, and I think the older you get, the more you get into it."