VIDEO : Britney Spears Shades Iggy Azalea and Her Canceled Tour With a Single, Perfect Tweet

Don't mess with Britney! Iggy Azalea claimed she wasn't throwing shade at Britney Spears when she tweeted her opinion on why their "Pretty Girls" track was a flop. Ms. Spears, however, wasn't necessarily convinced, and the pop princess fired back at Iggy on Twitter in the most masterful way. She tweeted, "Can't wait to get back to Vegas. So thankful I have shows for the rest of the year to look forward to... #YouWantAPieceOfMe." Brit expertly worked in that subtle diss alluding to Iggy's cancelled Great Escape tour, and while Piece of Me is the name of her Las Vegas show, that #YouWantAPieceOfMe hashtag seems like it holds a special meaning for a certain Aussie rapper.