The singing actress is 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."
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.