He was seen leaving in Paris, France, on Tuesday (March 8) night
The singer of "Firework" posed for photographers on the outside of Chez Raspoutine after seeing a concert with some friends.
In addition, Katy has been chosen as the new face of specialized professional brand GHD hair.
Katy said, "I am very excited to reveal the models that I did with the legendary David LaChapelle in the next season of GHD. Keep your eyes open and espérenlo. "