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

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.