Kate Upton and hunky “Dancing With the Stars” hoofer Maksim Chmerkovskiy weren’t shy about showing their affection at Catch on Monday night. Spies said they openly held hands after trying to avoid fotogs at an earlier movie premiere. “They seemed pretty open about their relationship,” a witness said. Those who managed to take their eyes off of Upton’s unfeasibly revealing dress also spotted Justin Bieber and Scooter Braun, Stephen Dorff, Owen Wilson and Tyson Beckford at the Meatpacking hot spot.