Transformation

Naomi Watts is known for taking on challenging roles, so it's no surprise that she's an adventurer when it comes to her 'do. "I'm someone who likes to change her hair," she told InStyle. "I hate it being the same all the time." While Watts moves easily between edgy pompadours and retro-inspired waves, she never takes things out of her comfort zone. "Always be natural," she said. "That's what my mother told me when I was growing up."

1998: The Dangerous Beauty star tries out a not-so-dangerous classic bob. "I love shorter hair," Watts has said.