The tight end congratulated Eberstein, 42, on Gerwig’s “Barbie” movie — before mortifyingly referencing one of Ryan Gosling’s lines from the 2023 film.

Pointing at Swift, Kelce quipped, “I’m just Ken.”

The “End Game” singer noted that Kelce didn’t realize his mistake until after the show, though Gerwig was also in the VIP tent the same night and was pictured with the NFLer.

Grant’s rep has yet to respond to Page Six’s request for comment.

The actor attended one of Swift’s London tour stops in June 2024, telling NME four months later about doing tequila shots with Kelce.

“We got absolutely smashed,” the “Notting Hill” star, 65, recalled in the October 2024 interview.

Grant went viral at the time for tweeting about the experience, writing via X, “Dear @taylorswift13 , You have an incredible show, an amazing and v hospitable team and excellent if gigantic boyfriend (#tequilashots).

“Thanks so much from one ageing London boy, wife and thrilled 8 year old #halfgirlhalfbracelet,” he continued.

Swift replied, “As a long time Hugh Grant stan this tweet is very important to my culture.”

Swift has been all over the talk show and radio circuit chatting about her new album “Life of a Showgirl.”

On Monday evening, the songstress appeared on “The Tonight Show” with Jimmy Fallon in a dazzling minidress to discuss the album — and her August engagement to Kelce.

During the interview, she revealed the NFL star was “nervous” before the proposal.

Still in the Big Apple for her whirlwind press tour, the hitmaker was subsequently spotted stepping out on Tuesday evening for dinner at NYC’s upscale The Eighty Six steakhouse in a stylish Miu Miu pleated mini skirt and stiletto boots.