Christina Aguilera was scheduled to appear on the concert, but had to turn them down because she had agreed to perform on Saturday Night Live and the rehearsal schedule conflicted with the Divas show. Despite this, rumors persist that Mariah Carey demanded Aguilera not appear with her.
Donna Summer agreed to perform after Diana Ross personally requested her. She turned down VH1's request to appear on Divas '99 with Whitney Houston and Cher, and instead did a solo concert on the channel later that year.