Justin Bieber had better watch his back! His Peruvian "twin," (left) Alejandro Aviles -- aka the Peruvian Justin Bieber -- was out to romance his girl, Selena Gomez.
Dozens of Justin and Selena fans went wild when the Bieber look-alike placed a giant cardboard cutout of the Disney darling under his arm and declared his love for her. Stalker?