Hilary says she knew exactly who she wanted to make the cutOprah! "I'm really honored to be one of the people that's going to help you, and happy that you wanted to do it here," Oprah says.

First, Hilary puts her hair into two pigtails using elastic bands. It must measure at least 8 inches long from the top of the elastic band down to the ends.

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Once Hilary's hair is prepped and ready to go, Oprah makes the first snip with the scissors. "You just cut my hair!" Hilary says. "That felt really good."

Oprah then chops off the second pigtail, and Hilary's hair is ready to be donated. "To think it's going to be somebody's hair!" Oprah says.