Dancing with the Stars: Behind-the-Scenes FunKirstie Alley & Maksim Chmerkovskiy's night out! The truth behind Ralph Macchio's "toupee"! See what happens when the stars leave the parquet to party

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.