Taylor Swift’s fans shut down a major road in Long Beach Island, N.J., after she was spotted at Jack Antonoff’s rehearsal dinner.

Hundreds of locals gathered outside the Black Whale where the pop superstar was seen celebrating her music producer’s impending nuptials to actress Margaret Qualley.

The “Cruel Summer” singer, who entered the popular bar and restaurant with Channing Tatum and Zoë Kravitz, was rocking a chic strapless black top with a matching maxi skirt.

Lana Del Rey, who has also collaborated with the Bleachers musician, was spotted on a balcony on the second level of the bar, smiling and laughing with other guests.

The “Born to Die” songstress, who stunned in a white floral dress, held her raven tresses up above her head to cool off in the summer heat.

The bride’s mom, Andie MacDowell, was also on hand to celebrate the couple and was seen playing with a baby inside the venue.

Cara Delevingne and Ryan Reynolds are also believed to be attending the A-list wedding, which will take place Saturday.

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As news of Swift’s arrival spread around the island, locals arrived in droves outside the eatery before police showed up on scene to direct traffic.The restaurant eventually shut the balcony curtains around 8:45 p.m. amid boos from the “Anti-Hero” hitmaker’s fans outside.

When the rehearsal dinner wrapped around 9 p.m., Swift and Del Rey left promptly while celebratory drinks continued.

News of Antonoff and Qualley’s engagement broke in May 2022 when the “Maid” star flashed her stunning diamond sparkler — which is estimated to be worth nearly $100,000 — at the Cannes Film Festival.

The couple sparked dating rumors in August 2021 when they were seen locking lips on a date in New York City.

Antonoff, Swift’s longtime collaborator, previously dated Lena Dunham from 2012 to 2018, while Qualley has been romantically linked to actor Nat Wolff and “Saturday Night Live” alum Pete Davidson.