Patti LaBelle and Jessica Simpson will make their VH1 Divas debuts Sunday, April 18 at 9 p.m. EST.
The special will air live from the MGM Grand in Las Vegas.
The network said additional performers, presenters and special guests will be announced as they are confirmed.
The Divas specials raise funds for the "VH1 Save the Music Foundation," a nonprofit organization dedicated to restoring instrumental-music programs in America's public schools and to raising awareness of the positive impact music participation has on students.
Since the foundation was created in 1997, more than $25 million worth of musical instruments have been donated to 1,000 public schools in 80 cities, VH1 said.