Photo: (Getty Images) You already know that Emma Stone starred in "The Amazing Spider-Man" and won MTV's first Trailblazer Award. But did you know that Emma's mom was diagnosed with breast cancer in 2008, and now Emma's an advocate for detecting cancer early? In fact, she's recently teamed up with Revlon for their campaign Lips Can Save Lives. No, they're not talking about a new lipstick color. The makeup company is encouraging women to use their lips to talk about cancer, and Emma is the perf ambassador for this. Other ambassadors are Halle...