One of the best parts of watching The Voice (other than Adam Levine's extreme hotness) is seeing what Christina Aguilera is going to wear. The singer never plays it safe, donning everything from a quirky "compact-disc" hat to a sexy zebra-print look. "I like to keep it fresh and interesting," the 31-year-old judge told Us Weekly of her style on the show. "I get bored and I'm an artist first ...