After sparking protest over her revealing wardrobe during an appearance on Britain's Got Talent last week, Jennifer Lopez is in hot waters again this time for her alleged diva antics during the Sound of Change concert held June 1.

The accusation comes from John Legend's fiancée model, Chrissy Teigen, who felt offended by the supposed "diva acts."

The arrows aren't exactly pointed to the 43-year-old Latina singer but to her demanding staff, but Teigen turned to Twitter to air her disappointment nonetheless.

"I won't get into it but Jennifer Lopez' people need to calm the fuck down," Teigen tweeted on June 1.

"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."

Apparently the 27-year-old model was unceremoniously shuttled off backstage by Lopez's fussy handlers to make way for the singer's arrival.

"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," Teigen tweeted in sarcasm.

The model's indignation, however, does not apparently change the way she looks at Lopez as an icon. She still professed admiration though she was really pissed off with the people running the singer's career.

"She shall still be my face and hair idol. Her people can kick rocks.," Teigen said.

"I'm bummed because I really loved her dammit. Anyhow, moving on."

Stories of handlers being more demanding and fussy than their celebrity bosses are nothing new. Sometimes you'd think that success travels into their egos faster than the ones who are actually in the limelight.

Celebs must take note, however, that handlers represent them. They are the artists' extension, so how these people act will reflect on the celebrities themselves.

Anyway, Lopez's performance at the Sound of Change concert at the Twickenham Stadium was well received by the audience. She shared the stage with Mary J. Blige for the song "Come Together."

Coming off a wardrobe controversy, Jennifer came out in her black low-neckline body suit, embellished with some very intricate frontal trimmings.

The concert was hosted by pop icon Madonna who invited the audience to "a revolution of love." Lopez also gave her own message: "I believe my girls out there deserve the best education. They deserve the best in health. And I believe injustice for my girls everywhere."

Other performers included Beyonce, Rita Ora, Jessie J, Florence Welch and Ellie Goulding. Prince Harry opened the event.