Michael Buble and Luisana Lopilato tie the knot

Canadian pop star Michael Buble, right, and Argentine TV actress Luisana Lopilato pose for pictures after their civil wedding ceremony in Buenos Aires, Argentina, March 31, 2011. (AP)

(CBS/AP) Canadian crooner Michael Buble is now a married man.

The Grammy-winning pop singer married girlfriend Argentine TV actress Luisana Lopilato in a civil ceremony on Thursday.

Pictures: Celebrity weddings and engagements

After tying the knot in downtown Buenos Aires, Argentina, Buble, 35, and Lopilato, 23, posed for a mob of fans.

She wore a lilac chiffon dress with silver high heels and Buble wore a sharp gray suit as he leaned down for a smooch.

Then Lopilato tossed a bouquet of purple orchids into the crowd as some fans threw rice and red rose petals and a young woman shouted "I love you Michael!"

Buble, who won a Grammy last month for traditional pop vocal album, is one of North America's top-grossing concert entertainers. Lopilato made her name as a model and in Argentine sitcoms and soap operas, including "Rebel Way," "Little Girls," "Married With Children" and "Pirate Soul."

The couple plan a full ceremony with 300 guests next month at a mansion outside Buenos Aires, and another wedding in Vancouver in April. They have homes in Canada, Los Angeles and Buenos Aires province.

Buble dated British actress Emily Blunt for several years before he met Lopilato in 2009 during a South American concert tour. Lopilato was romantically involved before with tennis player Juan Monaco.

Lopilato, who has more than 500,000 fans and followers on Facebook and Twitter, sent messages throughout the day thanking her family and the media. "How beautiful it all was!" she wrote.

31 Photos

Knots