Michael Bublé is officially off the market! He and his Argentine girlfriend, Luisana Loreley Lopilato de la Torre, tied the knot today (Thursday US time) with a civil service in her hometown of Buenos Aires. They'll reportedly have a bigger celebration with hundreds of family members and friends this weekend outside of the city. Michael and Luisana have planned to wed for over a year, and he even showed his love for her by wearing a male engagement ring! Now it looks like things are official — congrats to the happy couple!