AP Photo/Evan Agostini; Jason Merritt/Getty Images
InStyle Staff
Mar 23, 2012 @ 3:45 pm

What a day for Hollywood birthdays! Keri Russell and Michelle Monaghan both turn 36  today—Happy Birthday, ladies! To celebrate, click through the gallery to take a look back at Russell's transformation from Mouseketeer cutie to red carpet regular.

MORE:See More Hollywood TransformationsSee Michelle Monaghan's Best Beauty MomentsHow Elizabeth Banks Transformed for the Screen

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