Rachel McAdams, who turns 34 today, captured the hearts of moviegoers long ago with roles in some of our favorite films including Mean Girls, The Notebook, and Wedding Crashers. Just as her roles run the gamut so does her hair color: McAdams has gone from red to platinum blonde to chocolate brown to pink! In celebration of the actress's big day, we’re taking a look back at her transformation—from reigning Mean Girl to red carpet fixture. Click through the gallery to see all of her statement strands.
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