Katherine Heigl is officially a married woman after marrying Josh Kelley in a black-tie ceremony Sunday at the Stein Eriksen Lodge in Deer Valley, Utah.

The beautiful, 30-minute sunset ceremony, which ended shortly after 5 p.m., took place under a giant white tent in front of more than 100 family members and friends, including Grey's Anatomy co-stars Sandra Oh, Kate Walsh and T.R. Knight.

The heated wedding tent, dramatically lit by blue-and-purple lighting and decorated in large white drapes, was filled with silver chairs covered with white cushions on a white carpet. The couple wed on an altar flanked by brass candleholders.

Katherine Heigl and Josh Kelley (seen here January 2007) made it official!

Afterward, her Grey's Anatomy co-star T.R. Knight, who was to have served as a "bridesman," told a reporter: "It was incredible. It was beautiful."

Despite the pre-wedding jitters the actress was experiencing, Katherine's big day seems to have been perfect. Her sister Meg said: "It was great."

Is a baby next on the agenda for the couple?

"I'm super excited to start a family," Katherine Heigl recently remarked. "I've always wanted a family, a large family. But I say that now!"

They met in 2005 when Heigl appeared in the music video for Josh Kelley's song "Only You." She gushed: "I met a guy I can't imagine living without!"

Josh Kelley popped the question to Katie back on June 19, 2006, presenting the blonde beauty with a 3-carat, pear-shaped diamond flanked by pave diamonds. Half of the platinum band is from her mother, Nancy Heigl's, own engagement ring.

Congratulations to Katherine and Josh!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.