'Back to the Future' cast reunites at fan expo: See the photos

It was a "Back to the Future" reunion for the books.

Stars of the classic trilogy including Michael J. Fox, Christopher Lloyd, Lea Thompson and Tom Wilson appeared together at the Fan Expo Portland over the weekend.

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Thompson, who played Lorraine Baines-McFly in the films, shared plenty of snaps from the event on her Instagram story.

"Wow honestly had the best time today with my #bttf family," she wrote alongside one of her posts.

"Love these guys so much," she captioned a photo with Fox, who famously played Marty McFly in the trilogy; she also shared a photo with Wilson, who played Biff Tannen.

Fox shared a photo with his former co-stars on his Instagram too.

He captioned the reunion snap, "I love being at these FanExpo events and seeing some of my favorite people like Lea, Tom, Chris and all you #bttf heads. Heavy."

Fox and Lloyd, who played Dr. Emmett Brown (Doc) in the trilogy, previously reunited at New York Comic Con in October 2022.

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Michael J. Fox and Christopher Lloyd share a hug at New York Comic Con

The crowd went wild after the “Back to the Future” stars, who played Marty McFly and Doc Brown, shared a sweet moment onstage at the Javits Center.

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"The chemistry was there from the first scene we had," Lloyd said about his partnership with Fox, while speaking at that event. "... It remained that way for three movies and it hasn't gone away, by the way."