Harry Styles Pranks Opening Act Mabel Onstage During Dublin Show: Watch

Handout/Helene Marie Pambrun via Getty Images
Harry Styles performs during his European tour at AccorHotels Arena on March 13, 2018 in Paris, France. 

The second European leg of Harry Styles' self-titled tour drew to a close Monday night (Apr. 16), and naturally, the One Direction heartthrob couldn't bid farewell to opening act Mabel without some practical jokes.

Mabel was mid-performance when Styles made a surprise appearance onstage alongside her. As the crowd burst into an uproar of excitement, the "Sign of the Times" singer proceeded to douse his support act in silly string. Playing it off like a good sport, Mabel gave the headliner a (likely messy) hug before he dashed offstage again and allowed her to complete her set, still hilariously fighting through the remains of the prank left on her clothes and in her hair.

The aftermath can be seen in a video tweeted by Mabel, captioned "When @Harry_Styles pranks you on stage and throws a cream pie in your face whilst you're singing. At least it was vegan."

Evidence exists to prove Styles has a heart of gold, so obviously, his prank was obviously good-natured. The singer later expressed his gratitude on Twitter: "A huge thank you to @Mabel for also being wonderful. To all the crew, and everyone involved, thank you. Australia, I'll see you soon. H"

Styles will pay visits to Australia, Asia and South America before sweeping through the U.S. again in June and July. Kacey Musgraves will serve as opening act for the final leg of the North American tour in the U.S. and Canada.