Paul Rudd, Matthew Rhys at Brooklyn Black Tie Ball

Brooklyn was swooning over “Sexiest Man Alive” Paul Rudd at the borough’s recent Brooklyn Black Tie Ball when the “Ant-Man” star attended along with A-listers including Matthew Rhys.

Even the most level-headed attendees couldn’t help but confirm in a whisper, “he’s adorable,” as they spied the effortlessly cool thesp in the 718.

The event for the Brooklyn Bridge Park Conservancy has become a regular stop for Hollywood fixtures turned big-time borough boosters such as Matt Damon, John Krasinski, Keri Russell and Rose Byrne.

Gov. Kathy Hochul addressed the crowd at Brooklyn Bridge Park’s Pier 2, and Rhys served as a winning auctioneer with Christie’s ambassador Lydia Fenet.

The event raised $1.4 million, and RAL Companies and Affiliates founder and CEO Robert A. Levine was honored.

Also on the snazzy scene were NBA great JJ Redick, CNN’s Poppy Harlow, Maisonette’s Sylvana Durrett and fashion designer Ulla Johnson — as well as Brooklyn Bridge Park Conservancy executive director Nancy Webster, Brooklyn Bridge Park Corporation president Eric Landau and the conservancy’s board chair Chris Coffey.

Last year, Rudd was crowned as People’s “Sexiest Man Alive” — but the humble star joked at the time that his own wife, producer Julie Yaeger, disagreed with the honor. “She would have voted for Keanu Reeves,” he joked to “Extra.” “Come on, he’s Keanu, I’d vote for him.”

He also told People: “I do have an awareness, enough to know that when people hear that I’d be picked for this, they would say, ‘What?’ This is not false humility. There are so many people that should get this before me.”

The day before Rudd attended the Brooklyn gala, the major Kansas City Chiefs fan crashed a podcast hosted by the team’s star tight end, Travis Kelce, and his brother, Jason Kelce. Rudd was on the show to wish Travis a happy birthday, and to reminisce about the team’s Super Bowl victory in 2020.