Justin Bieber took to the stage at one of his recent concerts in the UK to prank Willow Smith during her act. Willow was performing her signature song “Whip My Hair” when Justin stormed the stage along with a bunch of his friends and Willow’s brother Jaden Smith, who is also on tour. The group showed off their hair whipping skills and then ran backstage to let Willow finish her set.

Here’s what Willow posted along with the picture above:

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