Justin Timberlake and Jessica Biel attends "The Model as Muse: Embodying Fashion" Costume Institute Gala at The Metropolitan Museum of Art on May 4, 2009 in New York City. Credit: Kevin Mazur/WireImage.com

Congratulations to the new Mr. and Mrs. Timberlake!

After a 10-month long engagement, Justin Timberlake and Jessica Biel tied the knot in southern Italy on Friday, Us Weekly has learned. The couple married at 7:30 p.m. local time.

The "Sexy Back" singer, 31, popped the question with a vintage-style, six-carat engagement ring, which he designed, over the holidays in December 2011. (Us broke the news in January.) Said a source of why the spot is special for the couple: "Justin knows how much she loves snowboarding and the mountains, so it was the perfect place."

It has been a long road to the altar for the longtime loves, who have dated on and off for nearly five years. But after a brief three-month split in 2011, Biel made it clear that she wanted to spend her life with Timberlake. "When they reunited, they had a conversation about taking the next step," the insider explained.

It's the first marriage for both Biel and Timberlake, whose past serious girlfriends include Britney Spears and Cameron Diaz. Biel previously dated Chris Evans, her costar in 2004's Cellular and 2006's London.