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Piers Morgan is promising to get revenge on One Direction's Harry Styles after the singer pulled down Piers' shorts in a sneak attack at a charity soccer game over the weekend. 

A Vine video of the prank is going viral, forcing the former CNN anchor to respond with a tweet to Harry reading:

The charity match was organized by Harry's bandmate Niall Horan, who announced that they raised over $500,000 for the Irish Autism Auction. 

Apart from his fellow One Direction members, other stars who participated included singers Olly Murs and Ronan Keating, actor James Corden and former soccer pro Robbie Savage. 

Photo Credit Splash News