Shailene Woodley went from girl next door to knockout stunner before our eyes.

She started out starring in TV commercials as a child, and has worked her way up to big-screen blockbusters alongside huge names like George Clooney and Nicole Kidman.

But don't be fooled, this gorgeous star is more than just a pretty face. She's also a devoted activist who speaks out about saving the planet.

Brains and beauty—now that's a winning combo.

Click through for more photos of the inspirational star.