Jan 13, 2013 01:30 PM
Gotta show off those guns! While Rob Kardashian doesn't seem too worried about his arms getting cold, he did cover up with some leggings under his gym shorts. Hawt!
Rob was snapped after a workout in West Hollywood, and when asked if he has a preference for a another niece or nephew, the reality star responded, "Healthy!" Rob is already an uncle to sister Kourtney's kids Mason and Penelope, so he'll have plenty of practice by the time Kim pops later this year!
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