Top 15 hottest TV actresses under 25

November 24, 2015: Katherine McNamara attending the 'Donate A Photo' holiday kick-off at The Ritz-Carlton in New York City. Credit: Kristin Callahan/ACE/INFphoto.com
Credit: Kristin Callahan/ACE/INFphoto.com

3. Katherine McNamara, Shadowhunters

Katherine McNamara is unquestionably a stunner, with her unique strawberry-blond, wavy hair, striking brown eyes and fair skin. To top it off, her soft but sweet smile gives her a refined quality that makes her all the more exquisite. The 20-year-old beauty has graced screens since 2007, starting with small roles in films and movies, including New Year's Eve in 2011. Her first recurring television roles were on Disney's Jessie (2013) and Disney XD's Kickin' It (2012-13). She moved on to a starring role in the short-lived 2014 MTV show Happyland, a part in ABC Family's The Fosters (2015) and a role in the Maze Runner sequel Scorch Trials (2015). She'll next appear in two films and as the lead role, Clary Fray, in Shadowhunters, the television adaptation of the hit book series "The Mortal Instruments."

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