Her father couldn't be there on her wedding day. So his colleagues stepped in.

A touching tribute turns a sad moment into something beautiful.

Kristen Mundell’s father was a policeman. He was killed in the line of duty in Washington, DC when Kristen was 16 years old.

It was a loss that was no doubt felt more keenly than ever on Kristen’s wedding day.

Family friend Detective Don Jones walked Kristen down the aisle, and kicked of the dance — but what happened next came as a total surprise.

Kent Mundell’s brothers in blue stepped in for their friend who could not be there, taking turns leading Kristen in her father-daughter dance.

“All of a sudden someone taps me on the shoulder and says, ‘Can I cut in?’ and I was shocked. I didn’t know how to react, how to respond,” Kristen told KOMO News.

“He said, ‘There’s a whole line of us,’ and right as he said that is when the next officer cut in and I just broke down.”

“There wasn’t a dry eye in the room,” said Detective Jones.

You can watch the beautiful tribute here. Post continues after video:

“People need to know that their family’s lives go on but they’re still affected by it every day,” Kristen told KOMO News. “I know they’re always there for me if I need them. I never thought they’d just show up.

“It was the best wedding surprise ever.”

You can see a gallery of the emotional tribute here (Images courtesy of Angela Lyons Photography)…