From Crazy Days & Nights:
This A+ list celebrity/singer who is not The Only Girl In The World might be about to have a serious PR problem. Apparently there is a phone recording of her booking agent turning down $250k for a 30 minute show for a charity which is what Mrs. Carter was offered and who is doing it for free. The booking agent can be heard saying that he just got off the phone with the A+ lister and that she won't play for less than $2M. He then used a bunch of derogatory terms for the mentally challenged people that the show is for and said "they" cost extra.