It's no surprise that Taylor Swift is pulling out all the stops for her 1989 tour currently happening in the U.S. right now. With a BFF list that includes seemingly anyone and everyone in the industry, you can bet we'll see some familiar faces pop up at various stops for her shows.

Swifties attending the Detroit show last night (May 30) were shocked to see Imagine Dragons frontman Dan Reynolds appear on stage, to which Taylor joined him in a duet of the band's 2012 hit "Radioactive." A fan video (courtesy of Oh No They Didn't) captured the magical stage moment, which you can watch for yourself by clicking on the video above.

After the show, Reynolds took to Twitter to thank the 25-year-old pop superstar for inviting him to share the stage with her.

Reynolds wasn't the only surprise guest at the show. For her performance of "Style," Taylor invited her supermodel friends Gigi Hadid and Martha Hunt on stage to do an impromptu walk-off, while posing as well. According to Billboard, Hadid and Hunt also appear in various pre-recorded video segments during the concert.

The 1989 tour continues until Oct. 31 with stops around the world, including Canada, England and the Netherlands. We can only speculate who else might pop up where, but knowing that the show has literally already saved lives, it's probably safe to assume that we'll be screaming "EPIC!" after each tour date.

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