Relations between Kobe Bryant and his Lakers teammate Dwight Howard were beyond icy during the weekend’s All-Star game in Houston — with Howard mocking Bryant behind his back in the locker room, sources exclusively tell Page Six. Amid other reports that the Lakers’ chilly on-court chemistry was spilling into the locker room, we’re told that Howard “grabbed Kobe’s uniform, put it on, and imitated him in front of all the other players on the West team. He was joking and berating Kobe” to fellow NBA stars, including the Clippers’ Chris Paul and Blake Griffin and Oklahoma City Thunder star Kevin Durant. The source added Bryant later arrived in the locker room, “said hello to everyone on the team except Howard, grabbed his stuff and moved as far away from Howard as he could.” Despite a recent clear-the-air meeting in Memphis, relations haven’t thawed. At the game, Bryant said, “It doesn’t matter” what his team does with Howard as the trade deadline approaches. Reps for Bryant and Howard didn’t get back to us last night.