Who else didn't realize that Sheryl was Hayden Panettiere...??

Dang, just caught this on TNT, great movie I enjoyed every minute of it. The message is very thought-provoking. One problem though, I was SHOCKED to see that it was Hayden Panettiere that played the little girl, Sheryl. It's hard to imagine that 6 years later, she turns into a complete hottie Claire on Heroes. I definitely wouldn't imagine her going through such a dramatic change. Her facial features, hairstyles, seem like a complete different person. I wonder how she managed to do that though, maybe plastic surgery or makeup??