“It was crazy stuff,” Lowe tells PEOPLE.

“It’s the kind of stuff you look back on and go, did that really happen?”

But in some ways, he’s never felt more famous than in his Brat Pack days.

Rob Lowe plays saxophone in a scene from the film ‘St. Elmo’s Fire’, 1985.

Rob Lowe in ‘St. Elmo’s Fire’.Columbia Pictures/Getty

Columbia Pictures/Getty

In 1985’sSt.

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St. Elmo’s Firewas a summer movie, originally hitting theaters on June 28, 1985.

Rob Lowe attends the 2024 ESPY Awards at Dolby Theatre on July 11, 2024 in Hollywood, California.

Rob Lowe.Amy Sussman/WireImage

A few months later, some fans decided to dress up as Billy Hicks for Halloween.

“It was surreal.

It was the first time I ever saw someone dressed like me for Halloween,” Lowe says.

Amy Sussman/WireImage

Lowe had been in several movies (starting withThe Outsiders) by the time ofSt.

Elmo’s Fire, but the Joel Schumacher-directed film elevated him to a new level of celebrity.

Every decade there’s a new crop and society demands it.

It’s fun to watch that unfold, having been there."

Given the cultural staying power ofSt.

So we’ll see."