Thousands of Stormzy fans packed out the Ovo Hydro to watch the multi-award winning rapper's Glasgow gig.
And eagle-eyed fans spotted one special guest in the audience - none other than documentarian Louis Theroux.
Louis is currently joining Stormzy on his tour as the first subject of his new six-part BBC Two documentary celebrity series.
With a working title 'The Louis Theroux Interviews', the series will see him interviewing some of the most iconic names in entertainment.
Gigs in Scotland shared a video of Louis at the gig, nodding along to Stormzy's huge hit Vossi Bop.
They captioned the video: "Louis don’t dab, he just Vossi bop. Did anybody spot special guest @officiallouistheroux at Stormzy’s @ovohydro show last night?"
Don't miss the latest headlines again. Sign up to our Glasgow Live newsletters here.
Fans shared their surprise at spotting Theroux in the crowd, with one joking, "so I wasn't the oldest person there after all. Out-aged, by 6 months."
Another added: "If you posted this on April Fools Day I wouldn't believe it."
The mum of one gig-goer also joked: "Hilarious! My daughter was there but I don’t think she knows who Louis is."
Meanwhile, one fan quickly got the root of his presence at the gig: "Haha brilliant, he's probably making a documentary... Keep yer eyes peeled."
