James Corden got a trip to funky town when he had Bruno Mars as a guest on the most recent episode of Carpool Karaoke. The pair hit it off nicely jamming out to "24K Magic." Corden did tease Mars about his love for silk saying, ?If I wore that, I?d look like I?m having a breakdown.? Corden also mentioned Mars' love for hats and Mars confesses, it's because he never knows what to do with his hair.