WATCH: Harry Styles Dances At Ariana Grande Concert

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Harry Styles proved that he’s an Ariana Grande fan this past weekend.

The singer, dressed in white shirt and white bell-bottoms, sang along and danced during Grande’s concert in London on Saturday night – and lucky for us all, several fans captured moments on video.

Clips show Styles shaking his booty, grinding with a female friend, and even chatting briefly with Stranger Things star Millie Bobby Brown, who was also in the VIP area.

“Ariana grande was truly incredible,” read one tweet, “but what topped my night was @Harry_Styles going ape s**t dancing in the VIP.”

See for yourself: