VIDEO : Iggy Azalea Blames Britney Spears For the Flop That Is 'Pretty Girls'

If you haven't noticed, Britney Spears and Iggy Azalea's summer collaboration, "Pretty Girls," flopped pretty hard after its recent premiere. While Britney has gone about her business, it seems that Iggy hasn't yet let this one go, and even sent a few shots at Britney and her team during a Twitter convo with fans about why the song hasn't taken over the summer yet.