Katy Perry switched up her hair for the Met Gala after party to a yellow wig - dramatic!

This image appears in the gallery:
This Week's MUST-SEE Pictures From The World Of Music

1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 

10. 65 images

See the full gallery: This Week's MUST-SEE Pictures From The World Of Music