Hundreds (maybe even thousands) of young, screaming fans. Long lines. Security and police everywhere.

Sounds like Justin Bieber’s in town, right? Wrong. Apparently Mindless Behavior is the new music phenomenon!

Mindless Behavior, who officially released their debut album “#1 Girl” yesterday (Tue. Sep 20), caused quite a scene on the streets of New York City as they hosted an in-store signing at Basement Mix in Brooklyn.

Best known for their single “My Girl,” Mindless Behavior, who have toured for the Backstreet Boys, Justin Bieber, Jason DeRulo, and most recently Janet Jackson, is comprised of four talented 13-year-old boys, who go by the stage names Ray Ray, Princeton, Prodigy and Roc Royal.

The R&B/Pop group have already appeared on major TV shows such as Good Morning America, 106 & Park and Wendy Williams, and we hear that just recently Fire Marshalls had to shut down a scheduled album signing at FYE due to thousands of kids showing up, proving that these young fellas are on their way to the top.

Mindless Behavior is currently performing on the “Scream Tour: The Next Generation” with Diggy Simmons, New Boyz, and others.