Khloe Kardashian appears to be a boxer in training. Kardashian has been strapping on the gloves and working out with celebrity trainer Gunnar Peterson and by the looks of things, she’s picking up the sport pretty quickly. Sources close to the reality star tell TMZ that she’s been serious about learning to box for a while now — though it’s unclear if she’ll ever get in the ring like her brother Rob did back in 2009.