17?

http://www35.zippyshare.com/v/Hb2SzHoH/file.html

Marie Avgeropoulos was 26 when she starred (and wore buckled knee boots and a leather jacket) in Lifetime's Fugitive At 17 (2012).  Marie is also one of the fierce warrior women in the frustrating The 100.  And Lifetime churns out a bunch of the completely ridiculous "....at 17" movies.