VIDEO : Iggy Azalea Bashes Britney For Featured Song on Twitter

Here is a Pro tip for rappers going through a rough time in their career: don't try and drag other people down with you, especially pop icons loved the world over.
Iggy Azalea hasn't had a great year professionally, and she's beginning to show it.
Between a canceled tour and a collaboration with Britney Spears that flopped, Azalea backlash is alive and well.