April 2004: Arriving at the world premiere of Mean Girls, the new starlet steps into the scene as a brunette with bangs, a neutral green eye, and a coral lip.
June 2005: Keeping it fun and playful with her tousled red locks and a natural face, McAdams attends the MTV Music Television Movie Awards.
September 2008: McAdams shows off her “dark” side at the premiere of Lucky One as a deep brunette in a swept back up-do with a dark smoky eye and a glossy lip.
January 2004: Exuding old Hollywood glam, McAdams glows at the Sherlock Holmes premiere with bright blonde curls and a classic red lip.
December 2011: Toning it down with grey locks in a tousled up-do and a frosted look, McAdams attends the premiere of Sherlock Holmes: A Game Of Shadows in Los Angeles.
January 2012: McAdams keeps it natural with her tousled blonde waves and classic black eyeliner at the 18th Annual Screen Actors Guild Awards.
August 2013: Turning heads with her fiery red locks and a shimmering eye, McAdams radiates at the world premiere of About Time in London.
May 2014: Arriving at the "Charles James: Beyond Fashion" Costume Institute Gala, McAdams keeps her look soft and romantic as a brunette with big soft curls, a neutral eye and rosy lips.
May 2015: McAdams keeps it short and simple with a tousled bob, creamy skin and a classic pink lip at the Aloha premiere in Los Angeles.
February 2016: McAdams stuns at the 88th Annual Academy Awards with a simple sleeked back up-do and a playful emerald eye as she received her first Oscar nomination for her role in the year's Best Motion Picture, Spotlight.