Surprise guest Jennifer Lopez joined other celebrities in Vancouver on Wednesday for We Day, which aims to inspire young people to change the world.
"Congratulations, We Day!" the famous singer said after her performance of songs "Get It Right" and "Big Booty."
"You make the world a better place."
Other big names in attendance include Selena Gomez, Kardinal Offishall, Macklemore & Ryan Lewis, Orlando Bloom, and Nick Jonas.
We Day is an annual event organized by Free The Children.