You've heard of a song going gold or platinum, right? Well, RIAA which stands for the Recording Industry Association of America announced Katy Perry went Diamond and not just on one song but three: Firework, Dark Horse and Roar. That makes her the first artist in history to have three diamond songs, making music history. Go Katy!
Source: twitter/riaa
Here's Katy's response on Twitter:
Source: twitter/katyperry