Michael Bublé and Luisana Lopilato walked through the airport in Rome together yesterday. Luisana smiled big while Michael stopped for fans and waved to cameras. He's in Italy after appearing on The Voice as an advisor to Blake Shelton last month. Michael's Hollywood run might continue with rumors that he has plans to record a duet with Reese Witherspoon, though that exciting news has yet to be confirmed. In the meantime, he's prepping for a big concert series. Michael just announced a string of Summer 2013 shows at London's O2 Arena with tickets going on presale today.