Disco 'Fever' back

Travolta’s return to Tony B’klyn

He’s still “Stayin’ Alive.” John Travolta partied like it was 1977 in Brooklyn Tuesday, as he drew a crowd larger than the number of people likely to see his upcoming “Gotti” film.

The official “John Gotti Day” event was held outside Lenny’s Pizza on 86th Street in Bensonhurst, which Travolta made famous in the opening scene of his classic disco film, “Saturday Night Fever.”

“I feel like Brooklyn has been in my DNA since ‘Welcome Back Kotter,’ he said, referring to his role as New Utrecht HS guy Vinnie Barbarino on the ’70s TV sitcom.

“I love you all so very much. Thanks for giving me a foundation for my career.”

The 61-year-old actor evoked his “Fever” sartorial style at the event by donning a leisuresuit jacket and wide-collared black shirt similar to his outfit from the disco-dance flick.

He even showed that he still has some his old moves, shimmying through familiar poses.

The actor also said, “Cheese!” for photos with Lenny’s slices stacked two-ata-time, as his “Fever” character, Tony Manero, does in the film. Still, he ended up eating them folded, one-at-a-time, like pretty much every other New Yorker (our fork-wielding mayor not included).

Hundreds of fans clogged the sidewalks and spilled out onto 86th Street to welcome back the star, and the crush got so intense that the NYPD issued an emergency crowd-control edict to its boroughwide task force just before noon, according to police sources.

“The place is almost uncontrolled chaos,” Travolta publicist Michael Klastorin told The Post.

Bensonhurst artist Paul Ingrisano, 30, waited outside the restaurant at 86th Street and 19th Avenue since 9 a.m. for a chance to meet his theatrical hero.

“I love it. I lived here my whole life. I used to be in musicals growing up. So I played John Travolta in ‘Saturday Night Fever’ and in ‘Grease,’ ” Ingrisano gushed.

Travolta’s latest flick, the long-delayed and critically panned biopic “Gotti” — in which he plays the late mob boss — opens on Friday.

He was joined Tuesday by costar and Gravesend native Will DeMeo, as well as Gotti’s son John “Junior” Gotti, who worked as a consultant on the flick.

Radio personality Joe Causi emceed the event, and state Sen. Martin Golden gave the actor an honorable citation.