"Grey's Anatomy" star Katherine Heigl and musician Josh Kelley exchanged wedding vows against a snowy backdrop in Utah.

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The private ceremony and reception was attended by "Grey's" co-stars T.R. Knightly and Sandra Oh, as well as spin-off "Private Practice" star Kate Walsh, People magazine reported.

Heigl walked down the aisle to a tune written by Kelley and performed by cello and guitar players, sources said. The 30-minute ceremony at the Stein Eriksen Lodge in Park City, Utah, was officiated by a Unitarian minister

The bride and groom wrote their own vows, sources said.