Taylor Swift shows up to BFF Jack Antonoff, Margaret Qualley’s wedding solo

Taylor Swift isn’t the kind of girl who barges in on a white veil occasion — but that’s exactly what she did.

The “Speak Now” singer was on hand to celebrate her right-hand man Jack Antonoff’s wedding to Margaret Qualley Saturday night.

The music producer, 39, wed the “Once Upon a Time in Hollywood…” actress, 28, at Parker’s Garage on Long Beach Island, N.J., in an intimate ceremony attended by close family and friends.

The Grammy winner, 33, who is currently on a break before taking her blockbuster Eras Tour to Mexico next week, was seen sneaking through the back entrance of Bird & Betty’s.

Swift stunned in a strappy light blue midi dress with an elegant lace overlay and ruffled accents. She complemented the look with matching heels as her hair was neatly straightened and swept behind her ears.

Other guests in attendance included singer Lana Del Rey, Qualley’s mom, actress Andie McDowell, and fashion designer Jenna Lyons.

Antonoff and Swift, who have collaborated on multiple Grammy-winning albums, became fast friends after meeting in 2012.

They joined forces to co-write and co-produce “Sweeter Than Fiction” for the “One Chance” soundtrack in 2013. Swift enlisted him to produce her pop album, “1989,” the following year.

“I’ve seen her change the music industry first-hand,” Antonoff told NME in 2021.

“She’s amazing for being a champion, and making things better for the generations to come. She has a long history of rightly exposing some real darkness in the music industry. And I’m personally thankful for it, outside of our friendship and working relationship, just as an artist.”

Meanwhile, Swift described the Bleachers musician as a lifelong friend when she released her 2022 album, “Midnights.”

“He’s my friend for life (presumptuous I know but I stand by it),” she wrote via Instagram last October.

“We’ve been making music together for nearly a decade HOWEVER… this is our first album we’ve done with just the two of us as main collaborators.”

The “Let’s Get Married” crooner had his first big win at the Grammys with Swift when “1989” took home Best Album at the 2016 ceremony.

They teamed up again for “Reputation,” giving fans a peek inside the songwriting process with an iconic clip of them writing the track, “Getaway Car.”

The pair went on to win Best Album for “Folklore” in 2021, and Antonoff penned a heartfelt tribute to Swift.

“you are the one who let me produce records first,” he gushed via Instagram at the time.

“before you i just ‘wasn’t a producer’ according to the herbs. i just wasnt let in that room. then i met you, we made out of the woods and you said, ‘that’s the version’ and that changed my life right there.”

Antonoff, who has also worked with the likes of Lorde, Lana Del Rey and The 1975, proposed to Qualley last Spring.

The “Fosse/Verdon” star confirmed their engagement when she shared a series of sweet Instagram selfies, in which she planted a kiss on his cheek.

“Oh I love him!” the actress captioned the Instagram post last May.

News of the pair’s engagement broke when Qualley flashed her stunning diamond sparkler — which is estimated to be worth nearly $100,000 — at the Cannes Film Festival.

The couple were first romantically linked in August 2021 when they were seen kissing on a New York City date.

Antonoff previously dated Swift’s pal Lena Dunham from 2012 to 2018 while Qualley was linked to her “Death Note” co-star Nat Wolff, “Saturday Night Live” alum Pete Davidson and model Cara Delevingne.