Backstage, the Canadian singer was even spotted posing next to Kim Kardashian. Selena herself might take the chance to get closer with her idol Enrique Iglesias, who came in sporty style, as she recently dished that she loves him and hoped to meet him.
Also gracing the red carpet of the star-studded concert were Taio Cruz, Jay Sean, Jeremy Davis, Hayley Williams and Taylor York of Paramore, DJ Pauly D of "Jersey Shore", Bruno Mars and Michael Buble among others.
Later that night, the audience at the venue were entertained by live performances from the likes of Selena, Justin, Bruno and B.o.B. Kim also appeared on stage and greeted the audience, while the whole show was led by host Elvis Duran.
