Standing just five feet tall, this blonde hottie somehow makes it work with towering 6-foot-6 man mountain Wladimir Klitschko. The 25-year-old actress gained fame as a super spunky cheerleader on NBC’s “Heroes,” and it appears that 39-year-old Wladimir, the world heavyweight boxing champion since 2006, is her hero in real life. The two were on and off again for years, then got engaged in late 2013. Late last year, Hayden gave birth to the couple’s daughter, Kaya Evdokia Klitschko. Look but don’t touch, guys. “Dr. Steel Hammer” could wreck any man. With just one punch.