A Chicago P.D. Wedding 12 Seasons in the Making! See Exclusive Photos from Burgess and Ruzek’s Nuptials

Wedding bells are ringing in the season finale of Chicago P.D.! And PEOPLE has exclusive photos of the happy couple!

In a TV event a full 12 seasons in the making, Kim Burgess (Marina Squerciati) and Adam Ruzek (Patrick Flueger) will finally tie the knot in the final episode of season 12 on May 21. And they’ll look darn good doing it.

The event also marks the show’s first formal church wedding, a detail not lost on Squerciati.

“I wanted the classic wedding,” she tells PEOPLE. “I’m glad it was in a church. I’m glad it was a real wedding. They deserve it.”

In one of PEOPLE’s photos, fans can see Adam excitedly waiting as Kim walks down the aisle, and their daughter Makayla (Ramona Edith Williams), the officiant, his dad Bob (Jack Coleman) and colleague Kevin Atwater (LaRoyce Hawkins) stand around him.

Makayla is wearing a sweet shimmering dress that tickled her TV mom.

“It looks like sparkles, but I think they’re actually little butterflies that flutter,” she says. “They’re very sweet and very age-appropriate and lovely.”

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As for when Flueger first saw Squerciati in her wedding scene costume, “He was like, ‘Nice,'” she says. “I’m like a sister to Paddy. He didn’t care. He’s like, ‘Eh, sister vibes.'”

In February, the actress shared some of the many wedding dresses she tried on for Burgess on Instagram and even asked fans to weigh in. Now, she’s confirming that she and the show took that feedback to heart.

“It had been so long, right? Three engagements, 12 years. I really felt like the fans deserved a say. That was really important to me,” she says. “I wasn’t allowed to post the dress that ultimately was picked, but I really did take into consideration what the fans liked and then went in that direction.”

See more of the romantic details — and Trudy Platt’s reaction to Kim’s dress — when the season 12 finale of Chicago P.D. airs Wednesday, May 21 at 10 p.m. ET/PT on NBC.