It looks like Britney Spears caught wind of Iggy Azalea’s rant about their collaborative single “Pretty Girls” flopping. Despite the fact that the single had two pop stars on it, it still barely cracked the Top 30. For the most part Iggy blamed the flop on lack of promotion and lack of performances. Azalea didn’t really blame Spears, but it is hard to look at Spears’ tweet below as anything less than a jab, especially since Iggy’s tour was cancelled.