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Credit: Courtesy Ralph Macchio

Updated: Tuesday May 17, 2011 | 06:00 AM EDT By: Cara Lynn Shultz

RALPH & KARINA

Louis may have joked about his hair extensions, but Ralph Macchio's do is most definitely real! After George Lopez insinuated that the actor wore a toupee, Ralph retaliated with this shot of pro partner Karina Smirnoff pulling at his locks. "It's real biatches :-)" the good-natured DWTS semifinalist Tweeted.