Katy Perry kicked off her Prismatic World Tour this week in Europe and apparently Lady Gaga was not impressed. Gaga sent out this tweet last night:
It looks like green hair and mechanical horses are the thing now 👀— Lady Gaga (@ladygaga) May 8, 2014
This is a clear jab at Perry, since she just dyed her hair slime green and rides a horse around during her performance. We may be witnessing the start of the next pop music feud. To be continued!