Sophia Bush first caught our attention during her long-running stint as Brooke Davis on the CW classic One Tree Hill. Since then we've watched her climb her way up the Hollywood ladder on Chicago P.D.,Chicago Fire, and Law & Order: Special Victims Unit, and in big screen hits like John Tucker Must Die. The beautiful actress also has her fair share of off screen talents: she's an avowed activist for issues like gay rights and environmentalism. Click through to wish her a happy birthday too.
Photos by Photographed for Maxim by Marcelo Krasilcic