Christina Aguilera
The singer was accused of making a face during Aguilera's performance.
Aguilera sang a medley from "The Bodyguard," which came out 25 years ago.
Perry never immerses herself in the cultures she uses.
WHAT'S HAPPENING
We're seeing double.
Give her some room, she's coming through.
Yanis Marshall and company rock "Telepathy" with soul, style and sass.
All the proceeds from her new single will go to victims of the shooting.
