Katy Harris and her fiancée Chris Eisenmann really like Taylor Swift. Really.

She turned him onto Swift's good-girl country back in 2006. They attend her concerts religiously, even dressing in costume. Harris' Instagram handle features a play on the pop star's name. They even originally planned to get married on Swift's 25th birthday, Dec. 13.

Now they can add one more thing to the list: Eloping outside a Taylor Swift concert.

In parking Lot K at Lincoln Financial Field, Katy Harris and Chris Eisenmann said, "I do" just before the kick-off for Swift's two-night Philadelphia stay.

Decked out in appropriate wedding attire — a bridal gown for her, a tux for him — even in the late-afternoon 90-plus-degree heat, the couple exchanged vows in front of a crowd of Swifties, friends and family members, including Harris' brother, who performed the ceremony.

They drove — separately — from Cape May County this afternoon and will attend the concert as they'd originally planned to.

Though super fans, this Swiftie elopement wasn't their first idea when it came to saying "I do." Still paying homage to the artist that brought them together, the pair originally sought a more traditional wedding experience. They had to postpone for financial reasons.

However, when planning their coordinating costumes for this weekend's 1989 World Tour, Harris took a look at her patiently waiting wedding dress and decided now was as good a time as ever to tie the knot. Eisenmann was on board.

Fast-forward two weeks, two wedding bands and a marriage license later, they're ready to share their wedding reception with tens of thousands of other fans geared up to see their idol shake it off.

Which makes Swift one heck of a wedding singer.

Some of you may have saw on facebook that Chris and I plan to get married in 3 days at the #1989tourphilly Taylor Swift Concert #06122015 --- We originally planned a a whole wedding for 12-13-14 ( Taylor's 25th birthday! ) We had reasons why we had to put it off. Meanwhile, I've had a gown hanging in my closet!! And as I was making our homemade outfits for Taylor (as I have done every two years when she comes to town) a joke about wearing my gown to the concert turned into us driving to Philly to get a marriage license and planning a ceremony outside of Lincoln Financial Field right before walking into the concert in our tux and gown! We kept it a secret for the most part until today! If you know anything about me its probably how I have been obsessed with Taylor since I first heard her in 2006. Chris has been very supportive and could even put most girls to shame going word for word on any of her albums (including deluxe editions) So naturally how could I ever give him up?! He is an incredible person and an amazing fiance! He also is the best father to our beautiful son and I cant wait to share their last name! I cant think of a better or more fitting way for us to celebrate this time in our lives --- I am on cloud 9! #bestfianceever #bestnightever @taylorswift #hitchedattswift We have our friends from philly.com who liked our story and asked if they could document it! Of course we said yes! Please tag Taylor for us in the comments so maybe she will catch wind of it! ♡ #wearenuts #hatersgonnahate #1989 #swifties #tagtaylor
A photo posted by Katy (@ktswift1122) on Jun 9, 2015 at 6:44pm PDT