The Smith kids are taking over the world!

Check out Willow and Jaden Smith leaving their hotel amid fan mania in Dublin today - Will and Jada's kids are currently on tour with overnight singing sensation Justin Bieber. The group just performed together in Birmingham to a sold-out crowd.

Willow already has two singles out ("Whip My Hair" and "21st Century Girl") and Jaden joined Bieber on stage for "Never Say Never."

The Smiths must be proud of their two kids and all their success this early on!