John Legend's outspoken model fiancee Chrissy Teigen was left fuming backstage at the Chime for Change charity concert in London on Saturday (01Jun13) after Jennifer Lopez's minders demanded she make way for the superstar. Lopez was one of the headliners at the Twickenham Stadium benefit gig, which highlighted the need to empower women around the world. Music icons Beyonce and Madonna also graced the stage, but it was Jenny from the Block's entourage who cause a stir behind the scenes. Teigen was watching from the wings as her husband-to-be performed his hit Ordinary People when she was asked to leave the area in preparation for Lopez's arrival. Taking to Twitter.com to slam the star's fussy team, she writes, "I won't get into it but Jennifer Lopez's people need to calm the f**k down. "I love Jennifer Lopez. But as I am sitting and watching John perform, I don't need her people to lay down the j-lo laws. She shall still be my face and hair idol. Her people can kick rocks. "I have never once been asked to leave an area for an artist's supreme arrival. Maybe I should carry around a horn and streamers."