Richardson's mother, Vanessa Redgrave, along with Meryl Streep and amfAR founding chairman Dr. Mathilde Krim will take part in the tribute. Redgrave and Natasha’s sister, Joely Richardson, are co-chairs of the event.
Richardson joined AmfAR's board of trustess in 2006. In 1999, she was the driving force behind "Unforgettable: Fashion of the Oscars," an auction of Academy Award gowns that raised more than $1.5 million for AIDS research. It was a cause she was passionate about. Her father, the Oscar-winning British film director Tony Richardson (Tom Jones), died of AIDS-related causes in 1991.
"Natasha was an eloquent and persuasive spokesperson for amfAR," said chairman of the board Kenneth Cole. "Her unique combination of passion, grace, and intelligence made her the perfect ambassador for the fight against AIDS."
The black-tie dinner and auction will also include special performances by M•A•C Viva Glam spokesperson Lady Gaga and Rufus Wainwright.
Richardson, who died on March 18, 2009, suffered a fatal brain injury after a fall while skiing on Mount Tremblant, Quebec. She is survived by her husband, Liam Neeson, and their two sons, Micheal 14, and Daniel 13.