Celebrity Central / Top 25 Celebs
Credit: David Crotty/Patrick McMullan/Sipa
Published: Tuesday April 16, 2013 06:00 AM EDT
More from PEOPLE
See More News
9 of 160
It's as if a cheerleader and a dancer got together and came up with McAdams's hairstyle: an amalgam of a high, perky ponytail and a sleek ballerina bun.
Copyright © 2014 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.
In partnership with AOL