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Hilary Swank: Before the Cut

The Oscar winner famously cut off her long hair on the Oprah Winfrey show, donating it to Pantene's "Beautiful Lengths" program.

Hilary Swank: Short Do

"Hilary has a sexy bob cut with a lot of body wave to it," says Christo. "For curly hair, always cut it according to the curl. Use texturizing cuts and inner diagonal angels tocontrol volume and shape."

Michelle Williams: Before the Cut

'The Brokeback Mountain' star wore her long and blonde before she became a mother.

Michelle Williams: After the Cut

"Michelle Williams' pixie cut is very daring and accentuates her entire face. Her eyes and eyebrows stand out, giving her an exotic look," Christo says. But keep in mind cuts this short require maintenance. "Manageability depends on the hair cut and hair texture. If your hair is a wavy or curly and you go too short, you will have to work hard to keep it looking good."

Selma Blair: Before the Cut

The star of the soon to be released romantic comedy 'My Mom's New Boyfriend' looked prim and proper with her long locks.