The singing actress will be part of the opening ceremony, which begins at 9 AM on the stage next to Sheep Meadow. Clark is scheduled to perform the Rodgers and Hammerstein classic "You'll Never Walk Alone."

Montego Glover, the Memphis Tony nominee who is currently starring in the new musical It Shoulda Been You, will also offer her rendition of "True Colors."

Confirmed celebrity guests include Tyne Daly, David Hyde Pierce, Nick Wechsler, Kit Williamson, Bellamy Young and CBS-2 News Anchor Dana Tyler.

The AIDS Walk Post-Walk Concert will feature Leon and the Peoples and The British Dependency.

Since 1986, AIDS Walk New York has raised more than $139 million for HIV programs and services in the tri-state area, and has grown into the largest AIDS fundraising event in the world.

For information about participating in or making a contribution to AIDS Walk New York, call (212) 807-9255 (WALK) or visit ny.aidswalk.net.