It’s official: Katherine Heigl is a married woman!

The Grey’s Anatomy star, 29, wed musician Josh Kelley, 27, in a black-tie ceremony Sunday afternoon at the Stein Eriksen Lodge in Deer Valley, Utah. Afterward, her Grey's costar T.R. Knight told Usmagazine.com: "It was incredible. It was beautiful."

Heigl's sister Meg told Us: "It was great."

The 30-minute sunset ceremony, which ended shortly after 5 p.m., took place under a giant white tent in front of more than 100 guests, including Grey's costars Sandra Oh, Kate Walsh and 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.

Knight was to have served as a groomsman.

Next on the agenda for the couple? "I'm super excited to start a family," Heigl recently told Extra. "I've always wanted a family, a large family. But I say that now!"

The pair met in 2005 when Heigl appeared in the music video for his song “Only You.” She gushed to Us: “I met this guy I couldn’t imagine living without!”

Kelley popped the question June 19, 2006, with a 3-carat, pear-shaped diamond flanked by pave diamonds. Designed by jeweler Ryan Ryan, the sparkler has sentimental value (half of the platinum band is from her mother’s own engagement ring).